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virt-top/0013-Split-up-huge-Top-module-into-smaller-modules.patch

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From 90d14bc151e488972d33eefaac2242d9a6e07578 Mon Sep 17 00:00:00 2001
From: "Richard W.M. Jones" <rjones@redhat.com>
Date: Mon, 27 Mar 2017 15:29:23 +0100
Subject: [PATCH 13/20] Split up huge Top module into smaller modules.
This change is hopefully pure refactoring, splitting up the very large
and highly interlinked module into more manageable modules with
well-defined (or at least *better*-defined) interfaces between them.
---
MANIFEST | 12 +
po/POTFILES | 6 +
src/.depend | 36 +-
src/Makefile.in | 6 +
src/README | 38 +-
src/collect.ml | 455 ++++++++++++++++
src/collect.mli | 86 ++++
src/csv_output.ml | 118 +++++
src/csv_output.mli | 27 +
src/opt_csv.ml | 2 +-
src/opt_xml.ml | 2 +-
src/redraw.ml | 506 ++++++++++++++++++
src/redraw.mli | 20 +
src/screen.ml | 52 ++
src/screen.mli | 41 ++
src/stream_output.ml | 84 +++
src/stream_output.mli | 22 +
src/top.ml | 1139 +----------------------------------------
src/top.mli | 20 +-
src/types.ml | 147 ++++++
src/types.mli | 49 ++
src/utils.ml | 65 ---
src/utils.mli | 9 -
23 files changed, 1719 insertions(+), 1223 deletions(-)
create mode 100644 src/collect.ml
create mode 100644 src/collect.mli
create mode 100644 src/csv_output.ml
create mode 100644 src/csv_output.mli
create mode 100644 src/redraw.ml
create mode 100644 src/redraw.mli
create mode 100644 src/screen.ml
create mode 100644 src/screen.mli
create mode 100644 src/stream_output.ml
create mode 100644 src/stream_output.mli
create mode 100644 src/types.ml
create mode 100644 src/types.mli
diff --git a/MANIFEST b/MANIFEST
index 26e87b2..4e4014b 100644
--- a/MANIFEST
+++ b/MANIFEST
@@ -54,12 +54,24 @@ TODO
src/.depend
src/Makefile.in
src/README
+src/collect.ml
+src/collect.mli
+src/csv_output.ml
+src/csv_output.mli
src/main.ml
src/opt_calendar.ml
src/opt_csv.ml
src/opt_xml.ml
+src/redraw.ml
+src/redraw.mli
+src/screen.ml
+src/screen.mli
+src/stream_output.ml
+src/stream_output.mli
src/top.ml
src/top.mli
+src/types.ml
+src/types.mli
src/utils.ml
src/utils.mli
src/version.ml.in
diff --git a/po/POTFILES b/po/POTFILES
index b826a2a..6150703 100644
--- a/po/POTFILES
+++ b/po/POTFILES
@@ -1,8 +1,14 @@
+../src/collect.ml
+../src/csv_output.ml
../src/main.ml
../src/opt_calendar.ml
../src/opt_csv.ml
../src/opt_gettext.ml
../src/opt_xml.ml
+../src/redraw.ml
+../src/screen.ml
+../src/stream.ml
../src/top.ml
+../src/types.ml
../src/utils.ml
../src/version.ml
diff --git a/src/.depend b/src/.depend
index f487c18..1075f36 100644
--- a/src/.depend
+++ b/src/.depend
@@ -1,18 +1,36 @@
+collect.cmi: types.cmi
+collect.cmo: utils.cmi types.cmi collect.cmi
+collect.cmx: utils.cmx types.cmx collect.cmi
+csv_output.cmi: types.cmi collect.cmi
+csv_output.cmo: collect.cmi csv_output.cmi
+csv_output.cmx: collect.cmx csv_output.cmi
main.cmo: top.cmi opt_gettext.cmo
main.cmx: top.cmx opt_gettext.cmx
opt_calendar.cmo: top.cmi opt_gettext.cmo
opt_calendar.cmx: top.cmx opt_gettext.cmx
-opt_csv.cmo: top.cmi opt_gettext.cmo
-opt_csv.cmx: top.cmx opt_gettext.cmx
+opt_csv.cmo: top.cmi opt_gettext.cmo csv_output.cmi
+opt_csv.cmx: top.cmx opt_gettext.cmx csv_output.cmx
opt_gettext.cmo:
opt_gettext.cmx:
-opt_xml.cmo: top.cmi opt_gettext.cmo
-opt_xml.cmx: top.cmx opt_gettext.cmx
-top.cmi:
-top.cmo: version.cmo utils.cmi opt_gettext.cmo top.cmi
-top.cmx: version.cmx utils.cmx opt_gettext.cmx top.cmi
+opt_xml.cmo: opt_gettext.cmo collect.cmi
+opt_xml.cmx: opt_gettext.cmx collect.cmx
+redraw.cmi: types.cmi collect.cmi
+redraw.cmo: utils.cmi types.cmi screen.cmi opt_gettext.cmo collect.cmi redraw.cmi
+redraw.cmx: utils.cmx types.cmx screen.cmx opt_gettext.cmx collect.cmx redraw.cmi
+screen.cmi:
+screen.cmo: screen.cmi
+screen.cmx: screen.cmi
+stream_output.cmi: types.cmi collect.cmi
+stream_output.cmo: utils.cmi screen.cmi collect.cmi stream_output.cmi
+stream_output.cmx: utils.cmx screen.cmx collect.cmx stream_output.cmi
+top.cmi: types.cmi
+top.cmo: version.cmo utils.cmi types.cmi stream_output.cmi screen.cmi redraw.cmi opt_gettext.cmo csv_output.cmi collect.cmi top.cmi
+top.cmx: version.cmx utils.cmx types.cmx stream_output.cmx screen.cmx redraw.cmx opt_gettext.cmx csv_output.cmx collect.cmx top.cmi
+types.cmi:
+types.cmo: utils.cmi opt_gettext.cmo types.cmi
+types.cmx: utils.cmx opt_gettext.cmx types.cmi
utils.cmi:
-utils.cmo: opt_gettext.cmo utils.cmi
-utils.cmx: opt_gettext.cmx utils.cmi
+utils.cmo: utils.cmi
+utils.cmx: utils.cmi
version.cmo:
version.cmx:
diff --git a/src/Makefile.in b/src/Makefile.in
index ae896cb..64f431e 100644
--- a/src/Makefile.in
+++ b/src/Makefile.in
@@ -42,6 +42,12 @@ OBJS := \
version.cmo \
opt_gettext.cmo \
utils.cmo \
+ types.cmo \
+ collect.cmo \
+ screen.cmo \
+ redraw.cmo \
+ csv_output.cmo \
+ stream_output.cmo \
top.cmo
ifneq ($(OCAML_PKG_xml_light),no)
OBJS += opt_xml.cmo
diff --git a/src/README b/src/README
index 8aa2348..1fd4be3 100644
--- a/src/README
+++ b/src/README
@@ -5,19 +5,37 @@ The code is structured into these files:
String functions and other small utility functions. This is
included directly into virt_top.ml.
+ types.mli, types.ml
+
+ Various internally used types and functions operating on those
+ types.
+
+ collect.mli, collect.ml
+
+ Stats information is collected in these functions.
+
+ screen.mli, screen.ml
+
+ Various useful functions for drawing to the curses screen.
+
+ redraw.mli, redraw.ml
+
+ Redraw the main display.
+
+ csv_output.mli, csv_output.ml
+
+ Functions which implement --csv mode.
+
+ stream_output.mli, stream_output.ml
+
+ Functions which implement --stream mode.
+
top.mli, top.ml
This is the virt-top program.
- The two interesting functions are called 'collect' and 'redraw'.
-
- 'collect' collects all the information about domains, etc.
-
- 'redraw' updates the display on each frame.
-
- Another interesting function is 'start_up' which handles all
- start-up stuff, eg. command line arguments, connecting to the
- hypervisor, enabling curses.
+ 'start_up' handles all start-up stuff, eg. command line arguments,
+ connecting to the hypervisor, enabling curses.
The function 'main_loop' runs the main loop and has sub-functions
to deal with keypresses, help screens and so on.
@@ -38,7 +56,7 @@ The code is structured into these files:
opt_csv.ml
Any code which needs the optional ocaml-csv library goes
- in here. This implements the --csv command line option.
+ in here.
opt_calendar.ml
diff --git a/src/collect.ml b/src/collect.ml
new file mode 100644
index 0000000..f856067
--- /dev/null
+++ b/src/collect.ml
@@ -0,0 +1,455 @@
+(* 'top'-like tool for libvirt domains.
+ (C) Copyright 2007-2017 Richard W.M. Jones, Red Hat Inc.
+ http://libvirt.org/
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*)
+
+module C = Libvirt.Connect
+module D = Libvirt.Domain
+
+open Printf
+open ExtList
+
+open Utils
+open Types
+
+(* Hook for XML support (see [opt_xml.ml]). *)
+let parse_device_xml : (int -> [>`R] D.t -> string list * string list) ref =
+ ref (
+ fun _ _ -> [], []
+ )
+
+(* Intermediate "domain + stats" structure that we use to collect
+ * everything we know about a domain within the collect function.
+ *)
+type rd_domain = Inactive | Active of rd_active
+and rd_active = {
+ rd_domid : int; (* Domain ID. *)
+ rd_dom : [`R] D.t; (* Domain object. *)
+ rd_info : D.info; (* Domain CPU info now. *)
+ rd_block_stats : (string * D.block_stats) list;
+ (* Domain block stats now. *)
+ rd_interface_stats : (string * D.interface_stats) list;
+ (* Domain net stats now. *)
+ rd_prev_info : D.info option; (* Domain CPU info previously. *)
+ rd_prev_block_stats : (string * D.block_stats) list;
+ (* Domain block stats prev. *)
+ rd_prev_interface_stats : (string * D.interface_stats) list;
+ (* Domain interface stats prev. *)
+ (* The following are since the last slice, or 0 if cannot be calculated: *)
+ rd_cpu_time : float; (* CPU time used in nanoseconds. *)
+ rd_percent_cpu : float; (* CPU time as percent of total. *)
+ rd_mem_bytes : int64; (* Memory usage in bytes *)
+ rd_mem_percent: int64; (* Memory usage as percent of total *)
+ (* The following are since the last slice, or None if cannot be calc'd: *)
+ rd_block_rd_reqs : int64 option; (* Number of block device read rqs. *)
+ rd_block_wr_reqs : int64 option; (* Number of block device write rqs. *)
+ rd_block_rd_bytes : int64 option; (* Number of bytes block device read *)
+ rd_block_wr_bytes : int64 option; (* Number of bytes block device write *)
+ (* _info fields includes the number considering --block_in_bytes option *)
+ rd_block_rd_info : int64 option; (* Block device read info for user *)
+ rd_block_wr_info : int64 option; (* Block device read info for user *)
+
+ rd_net_rx_bytes : int64 option; (* Number of bytes received. *)
+ rd_net_tx_bytes : int64 option; (* Number of bytes transmitted. *)
+}
+
+type stats = {
+ rd_doms : (string * rd_domain) list; (* List of domains. *)
+ rd_time : float;
+ rd_printable_time : string;
+ rd_nr_pcpus : int;
+ rd_total_cpu : float;
+ rd_total_cpu_per_pcpu : float;
+ rd_totals : (int * int * int * int * int * int * int * int * int * float *
+ int64 * int64);
+}
+
+type pcpu_stats = {
+ rd_pcpu_doms : (int * string * int *
+ Libvirt.Domain.vcpu_info array * int64 array array *
+ int64 array array * string * int) list;
+ rd_pcpu_pcpus : int64 array array array;
+ rd_pcpu_pcpus_cpu_time : float array
+}
+
+(* We cache the list of block devices and interfaces for each domain
+ * here, so we don't need to reparse the XML each time.
+ *)
+let devices = Hashtbl.create 13
+
+(* Function to get the list of block devices, network interfaces for
+ * a particular domain. Get it from the devices cache, and if not
+ * there then parse the domain XML.
+ *)
+let get_devices id dom =
+ try Hashtbl.find devices id
+ with Not_found ->
+ let blkdevs, netifs = (!parse_device_xml) id dom in
+ Hashtbl.replace devices id (blkdevs, netifs);
+ blkdevs, netifs
+
+(* We save the state of domains across redraws here, which allows us
+ * to deduce %CPU usage from the running total.
+ *)
+let last_info = Hashtbl.create 13
+let last_time = ref (Unix.gettimeofday ())
+
+(* Save pcpu_usages structures across redraws too (only for pCPU display). *)
+let last_pcpu_usages = Hashtbl.create 13
+
+let clear_pcpu_display_data () =
+ Hashtbl.clear last_pcpu_usages
+
+let collect (conn, _, _, _, _, node_info, _, _) block_in_bytes =
+ (* Number of physical CPUs (some may be disabled). *)
+ let nr_pcpus = C.maxcpus_of_node_info node_info in
+
+ (* Get the current time. *)
+ let time = Unix.gettimeofday () in
+ let tm = Unix.localtime time in
+ let printable_time =
+ sprintf "%02d:%02d:%02d" tm.Unix.tm_hour tm.Unix.tm_min tm.Unix.tm_sec in
+
+ (* What's the total CPU time elapsed since we were last called? (ns) *)
+ let total_cpu_per_pcpu = 1_000_000_000. *. (time -. !last_time) in
+ (* Avoid division by zero. *)
+ let total_cpu_per_pcpu =
+ if total_cpu_per_pcpu <= 0. then 1. else total_cpu_per_pcpu in
+ let total_cpu = float node_info.C.cpus *. total_cpu_per_pcpu in
+
+ (* Get the domains. Match up with their last_info (if any). *)
+ let doms =
+ (* Active domains. *)
+ let n = C.num_of_domains conn in
+ let ids =
+ if n > 0 then Array.to_list (C.list_domains conn n)
+ else [] in
+ let doms =
+ List.filter_map (
+ fun id ->
+ try
+ let dom = D.lookup_by_id conn id in
+ let name = D.get_name dom in
+ let blkdevs, netifs = get_devices id dom in
+
+ (* Get current CPU, block and network stats. *)
+ let info = D.get_info dom in
+ let block_stats =
+ try List.map (fun dev -> dev, D.block_stats dom dev) blkdevs
+ with
+ | Libvirt.Not_supported "virDomainBlockStats"
+ | Libvirt.Virterror _ -> [] in
+ let interface_stats =
+ try List.map (fun dev -> dev, D.interface_stats dom dev) netifs
+ with
+ | Libvirt.Not_supported "virDomainInterfaceStats"
+ | Libvirt.Virterror _ -> [] in
+
+ let prev_info, prev_block_stats, prev_interface_stats =
+ try
+ let prev_info, prev_block_stats, prev_interface_stats =
+ Hashtbl.find last_info id in
+ Some prev_info, prev_block_stats, prev_interface_stats
+ with Not_found -> None, [], [] in
+
+ Some (name,
+ Active {
+ rd_domid = id; rd_dom = dom; rd_info = info;
+ rd_block_stats = block_stats;
+ rd_interface_stats = interface_stats;
+ rd_prev_info = prev_info;
+ rd_prev_block_stats = prev_block_stats;
+ rd_prev_interface_stats = prev_interface_stats;
+ rd_cpu_time = 0.; rd_percent_cpu = 0.;
+ rd_mem_bytes = 0L; rd_mem_percent = 0L;
+ rd_block_rd_reqs = None; rd_block_wr_reqs = None;
+ rd_block_rd_bytes = None; rd_block_wr_bytes = None;
+ rd_block_rd_info = None; rd_block_wr_info = None;
+ rd_net_rx_bytes = None; rd_net_tx_bytes = None;
+ })
+ with
+ Libvirt.Virterror _ -> None (* ignore transient error *)
+ ) ids in
+
+ (* Inactive domains. *)
+ let doms_inactive =
+ try
+ let n = C.num_of_defined_domains conn in
+ let names =
+ if n > 0 then Array.to_list (C.list_defined_domains conn n)
+ else [] in
+ List.map (fun name -> name, Inactive) names
+ with
+ (* Ignore transient errors, in particular errors from
+ * num_of_defined_domains if it cannot contact xend.
+ *)
+ | Libvirt.Virterror _ -> [] in
+
+ doms @ doms_inactive in
+
+ (* Calculate the CPU time (ns) and %CPU used by each domain. *)
+ let doms =
+ List.map (
+ function
+ (* We have previous CPU info from which to calculate it? *)
+ | name, Active ({ rd_prev_info = Some prev_info } as rd) ->
+ let cpu_time =
+ Int64.to_float (rd.rd_info.D.cpu_time -^ prev_info.D.cpu_time) in
+ let percent_cpu = 100. *. cpu_time /. total_cpu in
+ let mem_usage = rd.rd_info.D.memory in
+ let mem_percent =
+ 100L *^ rd.rd_info.D.memory /^ node_info.C.memory in
+ let rd = { rd with
+ rd_cpu_time = cpu_time;
+ rd_percent_cpu = percent_cpu;
+ rd_mem_bytes = mem_usage;
+ rd_mem_percent = mem_percent} in
+ name, Active rd
+ (* For all other domains we can't calculate it, so leave as 0 *)
+ | rd -> rd
+ ) doms in
+
+ (* Calculate the number of block device read/write requests across
+ * all block devices attached to a domain.
+ *)
+ let doms =
+ List.map (
+ function
+ (* Do we have stats from the previous slice? *)
+ | name, Active ({ rd_prev_block_stats = ((_::_) as prev_block_stats) }
+ as rd) ->
+ let block_stats = rd.rd_block_stats in (* stats now *)
+
+ (* Add all the devices together. Throw away device names. *)
+ let prev_block_stats =
+ sum_block_stats (List.map snd prev_block_stats) in
+ let block_stats =
+ sum_block_stats (List.map snd block_stats) in
+
+ (* Calculate increase in read & write requests. *)
+ let read_reqs =
+ block_stats.D.rd_req -^ prev_block_stats.D.rd_req in
+ let write_reqs =
+ block_stats.D.wr_req -^ prev_block_stats.D.wr_req in
+ let read_bytes =
+ block_stats.D.rd_bytes -^ prev_block_stats.D.rd_bytes in
+ let write_bytes =
+ block_stats.D.wr_bytes -^ prev_block_stats.D.wr_bytes in
+
+ let rd = { rd with
+ rd_block_rd_reqs = Some read_reqs;
+ rd_block_wr_reqs = Some write_reqs;
+ rd_block_rd_bytes = Some read_bytes;
+ rd_block_wr_bytes = Some write_bytes;
+ } in
+ let rd = { rd with
+ rd_block_rd_info =
+ if block_in_bytes then
+ rd.rd_block_rd_bytes else rd.rd_block_rd_reqs;
+ rd_block_wr_info =
+ if block_in_bytes then
+ rd.rd_block_wr_bytes else rd.rd_block_wr_reqs;
+ } in
+ name, Active rd
+ (* For all other domains we can't calculate it, so leave as None. *)
+ | rd -> rd
+ ) doms in
+
+ (* Calculate the same as above for network interfaces across
+ * all network interfaces attached to a domain.
+ *)
+ let doms =
+ List.map (
+ function
+ (* Do we have stats from the previous slice? *)
+ | name, Active ({ rd_prev_interface_stats =
+ ((_::_) as prev_interface_stats) }
+ as rd) ->
+ let interface_stats = rd.rd_interface_stats in (* stats now *)
+
+ (* Add all the devices together. Throw away device names. *)
+ let prev_interface_stats =
+ sum_interface_stats (List.map snd prev_interface_stats) in
+ let interface_stats =
+ sum_interface_stats (List.map snd interface_stats) in
+
+ (* Calculate increase in rx & tx bytes. *)
+ let rx_bytes =
+ interface_stats.D.rx_bytes -^ prev_interface_stats.D.rx_bytes in
+ let tx_bytes =
+ interface_stats.D.tx_bytes -^ prev_interface_stats.D.tx_bytes in
+
+ let rd = { rd with
+ rd_net_rx_bytes = Some rx_bytes;
+ rd_net_tx_bytes = Some tx_bytes } in
+ name, Active rd
+ (* For all other domains we can't calculate it, so leave as None. *)
+ | rd -> rd
+ ) doms in
+
+ (* Calculate totals. *)
+ let totals =
+ List.fold_left (
+ fun (count, running, blocked, paused, shutdown, shutoff,
+ crashed, active, inactive,
+ total_cpu_time, total_memory, total_domU_memory) ->
+ function
+ | (name, Active rd) ->
+ let test state orig =
+ if rd.rd_info.D.state = state then orig+1 else orig
+ in
+ let running = test D.InfoRunning running in
+ let blocked = test D.InfoBlocked blocked in
+ let paused = test D.InfoPaused paused in
+ let shutdown = test D.InfoShutdown shutdown in
+ let shutoff = test D.InfoShutoff shutoff in
+ let crashed = test D.InfoCrashed crashed in
+
+ let total_cpu_time = total_cpu_time +. rd.rd_cpu_time in
+ let total_memory = total_memory +^ rd.rd_info.D.memory in
+ let total_domU_memory =
+ total_domU_memory +^
+ if rd.rd_domid > 0 then rd.rd_info.D.memory else 0L in
+
+ (count+1, running, blocked, paused, shutdown, shutoff,
+ crashed, active+1, inactive,
+ total_cpu_time, total_memory, total_domU_memory)
+
+ | (name, Inactive) -> (* inactive domain *)
+ (count+1, running, blocked, paused, shutdown, shutoff,
+ crashed, active, inactive+1,
+ total_cpu_time, total_memory, total_domU_memory)
+ ) (0,0,0,0,0,0,0,0,0, 0.,0L,0L) doms in
+
+ (* Update last_time, last_info. *)
+ last_time := time;
+ Hashtbl.clear last_info;
+ List.iter (
+ function
+ | (_, Active rd) ->
+ let info = rd.rd_info, rd.rd_block_stats, rd.rd_interface_stats in
+ Hashtbl.add last_info rd.rd_domid info
+ | _ -> ()
+ ) doms;
+
+ { rd_doms = doms;
+ rd_time = time;
+ rd_printable_time = printable_time;
+ rd_nr_pcpus = nr_pcpus;
+ rd_total_cpu = total_cpu;
+ rd_total_cpu_per_pcpu = total_cpu_per_pcpu;
+ rd_totals = totals }
+
+(* Collect some extra information in PCPUDisplay display_mode. *)
+let collect_pcpu { rd_doms = doms; rd_nr_pcpus = nr_pcpus } =
+ (* Get the VCPU info and VCPU->PCPU mappings for active domains.
+ * Also cull some data we don't care about.
+ *)
+ let doms =
+ List.filter_map (
+ function
+ | (name, Active rd) ->
+ (try
+ let domid = rd.rd_domid in
+ let maplen = C.cpumaplen nr_pcpus in
+ let cpu_stats = D.get_cpu_stats rd.rd_dom in
+
+ (* Note the terminology is confusing.
+ *
+ * In libvirt, cpu_time is the total time (hypervisor +
+ * vCPU). vcpu_time is the time only taken by the vCPU,
+ * excluding time taken inside the hypervisor.
+ *
+ * For each pCPU, libvirt may return either "cpu_time"
+ * or "vcpu_time" or neither or both. This function
+ * returns an array pair [|cpu_time, vcpu_time|];
+ * if either is missing it is returned as 0.
+ *)
+ let find_cpu_usages params =
+ let rec find_uint64_field name = function
+ | (n, D.TypedFieldUInt64 usage) :: _ when n = name ->
+ usage
+ | _ :: params -> find_uint64_field name params
+ | [] -> 0L
+ in
+ [| find_uint64_field "cpu_time" params;
+ find_uint64_field "vcpu_time" params |]
+ in
+
+ let pcpu_usages = Array.map find_cpu_usages cpu_stats in
+ let maxinfo = rd.rd_info.D.nr_virt_cpu in
+ let nr_vcpus, vcpu_infos, cpumaps =
+ D.get_vcpus rd.rd_dom maxinfo maplen in
+
+ (* Got previous pcpu_usages for this domain? *)
+ let prev_pcpu_usages =
+ try Some (Hashtbl.find last_pcpu_usages domid)
+ with Not_found -> None in
+ (* Update last_pcpu_usages. *)
+ Hashtbl.replace last_pcpu_usages domid pcpu_usages;
+
+ (match prev_pcpu_usages with
+ | Some prev_pcpu_usages
+ when Array.length prev_pcpu_usages = Array.length pcpu_usages ->
+ Some (domid, name, nr_vcpus, vcpu_infos, pcpu_usages,
+ prev_pcpu_usages, cpumaps, maplen)
+ | _ -> None (* ignore missing / unequal length prev_vcpu_infos *)
+ );
+ with
+ Libvirt.Virterror _ -> None (* ignore transient libvirt errors *)
+ )
+ | (_, Inactive) -> None (* ignore inactive doms *)
+ ) doms in
+ let nr_doms = List.length doms in
+
+ (* Rearrange the data into a matrix. Major axis (down) is
+ * pCPUs. Minor axis (right) is domains. At each node we store:
+ * cpu_time hypervisor + domain (on this pCPU only, nanosecs),
+ * vcpu_time domain only (on this pCPU only, nanosecs).
+ *)
+ let make_3d_array dimx dimy dimz e =
+ Array.init dimx (fun _ -> Array.make_matrix dimy dimz e)
+ in
+ let pcpus = make_3d_array nr_pcpus nr_doms 2 0L in
+
+ List.iteri (
+ fun di (domid, name, nr_vcpus, vcpu_infos, pcpu_usages,
+ prev_pcpu_usages, cpumaps, maplen) ->
+ (* Which pCPUs can this dom run on? *)
+ for p = 0 to Array.length pcpu_usages - 1 do
+ pcpus.(p).(di).(0) <-
+ pcpu_usages.(p).(0) -^ prev_pcpu_usages.(p).(0);
+ pcpus.(p).(di).(1) <-
+ pcpu_usages.(p).(1) -^ prev_pcpu_usages.(p).(1)
+ done
+ ) doms;
+
+ (* Sum the total CPU time used by each pCPU, for the %CPU column. *)
+ let pcpus_cpu_time =
+ Array.map (
+ fun row ->
+ let cpu_time = ref 0L in
+ for di = 0 to Array.length row-1 do
+ let t = row.(di).(0) in
+ cpu_time := !cpu_time +^ t
+ done;
+ Int64.to_float !cpu_time
+ ) pcpus in
+
+ { rd_pcpu_doms = doms;
+ rd_pcpu_pcpus = pcpus;
+ rd_pcpu_pcpus_cpu_time = pcpus_cpu_time }
diff --git a/src/collect.mli b/src/collect.mli
new file mode 100644
index 0000000..440859b
--- /dev/null
+++ b/src/collect.mli
@@ -0,0 +1,86 @@
+(* 'top'-like tool for libvirt domains.
+ (C) Copyright 2007-2017 Richard W.M. Jones, Red Hat Inc.
+ http://libvirt.org/
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*)
+
+(* Hook for [Opt_xml] to override (if present). *)
+val parse_device_xml :
+ (int -> [ `R ] Libvirt.Domain.t -> string list * string list) ref
+
+(* Intermediate "domain + stats" structure that we use to collect
+ * everything we know about a domain within the collect function.
+ *)
+type rd_domain = Inactive | Active of rd_active
+and rd_active = {
+ rd_domid : int; (* Domain ID. *)
+ rd_dom : [`R] Libvirt.Domain.t; (* Domain object. *)
+ rd_info : Libvirt.Domain.info; (* Domain CPU info now. *)
+ rd_block_stats : (string * Libvirt.Domain.block_stats) list;
+ (* Domain block stats now. *)
+ rd_interface_stats : (string * Libvirt.Domain.interface_stats) list;
+ (* Domain net stats now. *)
+ rd_prev_info : Libvirt.Domain.info option; (* Domain CPU info previously. *)
+ rd_prev_block_stats : (string * Libvirt.Domain.block_stats) list;
+ (* Domain block stats prev. *)
+ rd_prev_interface_stats : (string * Libvirt.Domain.interface_stats) list;
+ (* Domain interface stats prev. *)
+ (* The following are since the last slice, or 0 if cannot be calculated: *)
+ rd_cpu_time : float; (* CPU time used in nanoseconds. *)
+ rd_percent_cpu : float; (* CPU time as percent of total. *)
+ rd_mem_bytes : int64; (* Memory usage in bytes *)
+ rd_mem_percent: int64; (* Memory usage as percent of total *)
+ (* The following are since the last slice, or None if cannot be calc'd: *)
+ rd_block_rd_reqs : int64 option; (* Number of block device read rqs. *)
+ rd_block_wr_reqs : int64 option; (* Number of block device write rqs. *)
+ rd_block_rd_bytes : int64 option; (* Number of bytes block device read *)
+ rd_block_wr_bytes : int64 option; (* Number of bytes block device write *)
+ (* _info fields includes the number considering --block_in_bytes option *)
+ rd_block_rd_info : int64 option; (* Block device read info for user *)
+ rd_block_wr_info : int64 option; (* Block device read info for user *)
+
+ rd_net_rx_bytes : int64 option; (* Number of bytes received. *)
+ rd_net_tx_bytes : int64 option; (* Number of bytes transmitted. *)
+}
+
+type stats = {
+ rd_doms : (string * rd_domain) list; (* List of domains. *)
+ rd_time : float;
+ rd_printable_time : string;
+ rd_nr_pcpus : int;
+ rd_total_cpu : float;
+ rd_total_cpu_per_pcpu : float;
+ rd_totals : (int * int * int * int * int * int * int * int * int * float *
+ int64 * int64);
+}
+
+type pcpu_stats = {
+ rd_pcpu_doms : (int * string * int *
+ Libvirt.Domain.vcpu_info array * int64 array array *
+ int64 array array * string * int) list;
+ rd_pcpu_pcpus : int64 array array array;
+ rd_pcpu_pcpus_cpu_time : float array
+}
+
+val collect : Types.setup -> bool -> stats
+(** Collect statistics. *)
+
+val collect_pcpu : stats -> pcpu_stats
+(** Used in PCPUDisplay mode only, this returns extra per-PCPU stats. *)
+
+val clear_pcpu_display_data : unit -> unit
+(** Clear the cache of pcpu_usages used by PCPUDisplay display_mode
+ when we switch back to TaskDisplay mode. *)
diff --git a/src/csv_output.ml b/src/csv_output.ml
new file mode 100644
index 0000000..9496ca8
--- /dev/null
+++ b/src/csv_output.ml
@@ -0,0 +1,118 @@
+(* 'top'-like tool for libvirt domains.
+ (C) Copyright 2007-2017 Richard W.M. Jones, Red Hat Inc.
+ http://libvirt.org/
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*)
+
+(* CSV output functions. *)
+
+open Printf
+open ExtList
+
+open Collect
+
+module C = Libvirt.Connect
+
+(* Hook for CSV support (see [opt_csv.ml]). *)
+let csv_write : (string list -> unit) ref =
+ ref (
+ fun _ -> ()
+ )
+
+(* Write CSV header row. *)
+let write_csv_header (csv_cpu, csv_mem, csv_block, csv_net) block_in_bytes =
+ (!csv_write) (
+ [ "Hostname"; "Time"; "Arch"; "Physical CPUs";
+ "Count"; "Running"; "Blocked"; "Paused"; "Shutdown";
+ "Shutoff"; "Crashed"; "Active"; "Inactive";
+ "%CPU";
+ "Total hardware memory (KB)";
+ "Total memory (KB)"; "Total guest memory (KB)";
+ "Total CPU time (ns)" ] @
+ (* These fields are repeated for each domain: *)
+ [ "Domain ID"; "Domain name"; ] @
+ (if csv_cpu then [ "CPU (ns)"; "%CPU"; ] else []) @
+ (if csv_mem then [ "Mem (bytes)"; "%Mem";] else []) @
+ (if csv_block && not block_in_bytes
+ then [ "Block RDRQ"; "Block WRRQ"; ] else []) @
+ (if csv_block && block_in_bytes
+ then [ "Block RDBY"; "Block WRBY"; ] else []) @
+ (if csv_net then [ "Net RXBY"; "Net TXBY" ] else [])
+ )
+
+(* Write summary data to CSV file. *)
+let append_csv (_, _, _, _, _, node_info, hostname, _) (* setup *)
+ (csv_cpu, csv_mem, csv_block, csv_net)
+ { rd_doms = doms;
+ rd_printable_time = printable_time;
+ rd_nr_pcpus = nr_pcpus; rd_total_cpu = total_cpu;
+ rd_totals = totals } (* state *) =
+ (* The totals / summary fields. *)
+ let (count, running, blocked, paused, shutdown, shutoff,
+ crashed, active, inactive,
+ total_cpu_time, total_memory, total_domU_memory) = totals in
+
+ let percent_cpu = 100. *. total_cpu_time /. total_cpu in
+
+ let summary_fields = [
+ hostname; printable_time; node_info.C.model; string_of_int nr_pcpus;
+ string_of_int count; string_of_int running; string_of_int blocked;
+ string_of_int paused; string_of_int shutdown; string_of_int shutoff;
+ string_of_int crashed; string_of_int active; string_of_int inactive;
+ sprintf "%2.1f" percent_cpu;
+ Int64.to_string node_info.C.memory;
+ Int64.to_string total_memory; Int64.to_string total_domU_memory;
+ Int64.to_string (Int64.of_float total_cpu_time)
+ ] in
+
+ (* The domains.
+ *
+ * Sort them by ID so that the list of relatively stable. Ignore
+ * inactive domains.
+ *)
+ let doms = List.filter_map (
+ function
+ | _, Inactive -> None (* Ignore inactive domains. *)
+ | name, Active rd -> Some (name, rd)
+ ) doms in
+ let cmp (_, { rd_domid = rd_domid1 }) (_, { rd_domid = rd_domid2 }) =
+ compare rd_domid1 rd_domid2
+ in
+ let doms = List.sort ~cmp doms in
+
+ let string_of_int64_option = Option.map_default Int64.to_string "" in
+
+ let domain_fields = List.map (
+ fun (domname, rd) ->
+ [ string_of_int rd.rd_domid; domname ] @
+ (if csv_cpu then [
+ string_of_float rd.rd_cpu_time; string_of_float rd.rd_percent_cpu
+ ] else []) @
+ (if csv_mem then [
+ Int64.to_string rd.rd_mem_bytes; Int64.to_string rd.rd_mem_percent
+ ] else []) @
+ (if csv_block then [
+ string_of_int64_option rd.rd_block_rd_info;
+ string_of_int64_option rd.rd_block_wr_info;
+ ] else []) @
+ (if csv_net then [
+ string_of_int64_option rd.rd_net_rx_bytes;
+ string_of_int64_option rd.rd_net_tx_bytes;
+ ] else [])
+ ) doms in
+ let domain_fields = List.flatten domain_fields in
+
+ (!csv_write) (summary_fields @ domain_fields)
diff --git a/src/csv_output.mli b/src/csv_output.mli
new file mode 100644
index 0000000..d5eab0f
--- /dev/null
+++ b/src/csv_output.mli
@@ -0,0 +1,27 @@
+(* 'top'-like tool for libvirt domains.
+ (C) Copyright 2007-2017 Richard W.M. Jones, Red Hat Inc.
+ http://libvirt.org/
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*)
+
+(** CSV output functions. *)
+
+(* Hook for [Opt_csv] to override (if present). *)
+val csv_write : (string list -> unit) ref
+
+val write_csv_header : bool * bool * bool * bool -> bool -> unit
+
+val append_csv : Types.setup -> bool * bool * bool * bool -> Collect.stats -> unit
diff --git a/src/opt_csv.ml b/src/opt_csv.ml
index 6c3b2be..6625c61 100644
--- a/src/opt_csv.ml
+++ b/src/opt_csv.ml
@@ -28,7 +28,7 @@ Top.csv_start :=
fun filename ->
chan := Some (open_out filename) ;;
-Top.csv_write :=
+Csv_output.csv_write :=
fun row ->
match !chan with
| None -> () (* CSV output not enabled. *)
diff --git a/src/opt_xml.ml b/src/opt_xml.ml
index bb83780..1037b85 100644
--- a/src/opt_xml.ml
+++ b/src/opt_xml.ml
@@ -27,7 +27,7 @@ module C = Libvirt.Connect
module D = Libvirt.Domain
module N = Libvirt.Network ;;
-Top.parse_device_xml :=
+Collect.parse_device_xml :=
fun id dom ->
try
let xml = D.get_xml_desc dom in
diff --git a/src/redraw.ml b/src/redraw.ml
new file mode 100644
index 0000000..9ce889b
--- /dev/null
+++ b/src/redraw.ml
@@ -0,0 +1,506 @@
+(* 'top'-like tool for libvirt domains.
+ (C) Copyright 2007-2017 Richard W.M. Jones, Red Hat Inc.
+ http://libvirt.org/
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*)
+
+open ExtList
+open Curses
+open Printf
+
+open Opt_gettext.Gettext
+open Utils
+open Types
+open Screen
+open Collect
+
+module C = Libvirt.Connect
+module D = Libvirt.Domain
+
+(* Keep a historical list of %CPU usages. *)
+let historical_cpu = ref []
+let historical_cpu_last_time = ref (Unix.gettimeofday ())
+
+(* Redraw the display. *)
+let redraw display_mode sort_order
+ (_, _, _, _, _, node_info, _, _) (* setup *)
+ block_in_bytes
+ historical_cpu_delay
+ { rd_doms = doms;
+ rd_time = time; rd_printable_time = printable_time;
+ rd_nr_pcpus = nr_pcpus;
+ rd_total_cpu = total_cpu;
+ rd_total_cpu_per_pcpu = total_cpu_per_pcpu;
+ rd_totals = totals } (* state *)
+ pcpu_display =
+ clear ();
+
+ (* Get the screen/window size. *)
+ let lines, cols = get_size () in
+
+ (* Time. *)
+ mvaddstr top_lineno 0 (sprintf "virt-top %s - " printable_time);
+
+ (* Basic node_info. *)
+ addstr
+ (sprintf "%s %d/%dCPU %dMHz %LdMB "
+ node_info.C.model node_info.C.cpus nr_pcpus node_info.C.mhz
+ (node_info.C.memory /^ 1024L));
+ (* Save the cursor position for when we come to draw the
+ * historical CPU times (down in this function).
+ *)
+ let stdscr = stdscr () in
+ let historical_cursor = getyx stdscr in
+
+ (match display_mode with
+
+ (*---------- Showing domains ----------*)
+ | TaskDisplay ->
+ (* Sort domains on current sort_order. *)
+ let doms =
+ let cmp =
+ match sort_order with
+ | DomainName ->
+ (fun _ -> 0) (* fallthrough to default name compare *)
+ | Processor ->
+ (function
+ | Active rd1, Active rd2 ->
+ compare rd2.rd_percent_cpu rd1.rd_percent_cpu
+ | Active _, Inactive -> -1
+ | Inactive, Active _ -> 1
+ | Inactive, Inactive -> 0)
+ | Memory ->
+ (function
+ | Active { rd_info = info1 }, Active { rd_info = info2 } ->
+ compare info2.D.memory info1.D.memory
+ | Active _, Inactive -> -1
+ | Inactive, Active _ -> 1
+ | Inactive, Inactive -> 0)
+ | Time ->
+ (function
+ | Active { rd_info = info1 }, Active { rd_info = info2 } ->
+ compare info2.D.cpu_time info1.D.cpu_time
+ | Active _, Inactive -> -1
+ | Inactive, Active _ -> 1
+ | Inactive, Inactive -> 0)
+ | DomainID ->
+ (function
+ | Active { rd_domid = id1 }, Active { rd_domid = id2 } ->
+ compare id1 id2
+ | Active _, Inactive -> -1
+ | Inactive, Active _ -> 1
+ | Inactive, Inactive -> 0)
+ | NetRX ->
+ (function
+ | Active { rd_net_rx_bytes = r1 }, Active { rd_net_rx_bytes = r2 } ->
+ compare r2 r1
+ | Active _, Inactive -> -1
+ | Inactive, Active _ -> 1
+ | Inactive, Inactive -> 0)
+ | NetTX ->
+ (function
+ | Active { rd_net_tx_bytes = r1 }, Active { rd_net_tx_bytes = r2 } ->
+ compare r2 r1
+ | Active _, Inactive -> -1
+ | Inactive, Active _ -> 1
+ | Inactive, Inactive -> 0)
+ | BlockRdRq ->
+ (function
+ | Active { rd_block_rd_reqs = r1 }, Active { rd_block_rd_reqs = r2 } ->
+ compare r2 r1
+ | Active _, Inactive -> -1
+ | Inactive, Active _ -> 1
+ | Inactive, Inactive -> 0)
+ | BlockWrRq ->
+ (function
+ | Active { rd_block_wr_reqs = r1 }, Active { rd_block_wr_reqs = r2 } ->
+ compare r2 r1
+ | Active _, Inactive -> -1
+ | Inactive, Active _ -> 1
+ | Inactive, Inactive -> 0)
+ in
+ let cmp (name1, dom1) (name2, dom2) =
+ let r = cmp (dom1, dom2) in
+ if r <> 0 then r
+ else compare name1 name2
+ in
+ List.sort ~cmp doms in
+
+ (* Print domains. *)
+ attron A.reverse;
+ let header_string =
+ if block_in_bytes
+ then " ID S RDBY WRBY RXBY TXBY %CPU %MEM TIME NAME"
+ else " ID S RDRQ WRRQ RXBY TXBY %CPU %MEM TIME NAME"
+ in
+ mvaddstr header_lineno 0
+ (pad cols header_string);
+ attroff A.reverse;
+
+ let rec loop lineno = function
+ | [] -> ()
+ | (name, Active rd) :: doms ->
+ if lineno < lines then (
+ let state = show_state rd.rd_info.D.state in
+ let rd_req = Show.int64_option rd.rd_block_rd_info in
+ let wr_req = Show.int64_option rd.rd_block_wr_info in
+ let rx_bytes = Show.int64_option rd.rd_net_rx_bytes in
+ let tx_bytes = Show.int64_option rd.rd_net_tx_bytes in
+ let percent_cpu = Show.percent rd.rd_percent_cpu in
+ let percent_mem = Int64.to_float rd.rd_mem_percent in
+ let percent_mem = Show.percent percent_mem in
+ let time = Show.time rd.rd_info.D.cpu_time in
+
+ let line =
+ sprintf "%5d %c %s %s %s %s %s %s %s %s"
+ rd.rd_domid state rd_req wr_req rx_bytes tx_bytes
+ percent_cpu percent_mem time name in
+ let line = pad cols line in
+ mvaddstr lineno 0 line;
+ loop (lineno+1) doms
+ )
+ | (name, Inactive) :: doms -> (* inactive domain *)
+ if lineno < lines then (
+ let line =
+ sprintf
+ " - (%s)"
+ name in
+ let line = pad cols line in
+ mvaddstr lineno 0 line;
+ loop (lineno+1) doms
+ )
+ in
+ loop domains_lineno doms
+
+ (*---------- Showing physical CPUs ----------*)
+ | PCPUDisplay ->
+ let { rd_pcpu_doms = doms;
+ rd_pcpu_pcpus = pcpus;
+ rd_pcpu_pcpus_cpu_time = pcpus_cpu_time } =
+ match pcpu_display with
+ | Some p -> p
+ | None -> failwith "internal error: no pcpu_display data" in
+
+ (* Display the pCPUs. *)
+ let dom_names =
+ String.concat "" (
+ List.map (
+ fun (_, name, _, _, _, _, _, _) ->
+ let len = String.length name in
+ let width = max (len+1) 12 in
+ pad width name
+ ) doms
+ ) in
+ attron A.reverse;
+ mvaddstr header_lineno 0 (pad cols ("PHYCPU %CPU " ^ dom_names));
+ attroff A.reverse;
+
+ Array.iteri (
+ fun p row ->
+ mvaddstr (p+domains_lineno) 0 (sprintf "%4d " p);
+ let cpu_time = pcpus_cpu_time.(p) in (* ns used on this CPU *)
+ let percent_cpu = 100. *. cpu_time /. total_cpu_per_pcpu in
+ addstr (Show.percent percent_cpu);
+ addch ' ';
+
+ List.iteri (
+ fun di (domid, name, _, _, _, _, _, _) ->
+ let t = pcpus.(p).(di).(0) in (* hypervisor + domain *)
+ let t_only = pcpus.(p).(di).(1) in (* domain only *)
+ let len = String.length name in
+ let width = max (len+1) 12 in
+ let str_t =
+ if t <= 0L then ""
+ else (
+ let t = Int64.to_float t in
+ let percent = 100. *. t /. total_cpu_per_pcpu in
+ Show.percent percent
+ ) in
+ let str_t_only =
+ if t_only <= 0L then ""
+ else (
+ let t_only = Int64.to_float t_only in
+ let percent = 100. *. t_only /. total_cpu_per_pcpu in
+ Show.percent percent
+ ) in
+ addstr (pad 5 str_t);
+ addstr (pad 5 str_t_only);
+ addstr (pad (width-10) " ");
+ ()
+ ) doms
+ ) pcpus;
+
+ (*---------- Showing network interfaces ----------*)
+ | NetDisplay ->
+ (* Only care about active domains. *)
+ let doms =
+ List.filter_map (
+ function
+ | (name, Active rd) -> Some (name, rd)
+ | (_, Inactive) -> None
+ ) doms in
+
+ (* For each domain we have a list of network interfaces seen
+ * this slice, and seen in the previous slice, which we now
+ * match up to get a list of (domain, interface) for which
+ * we have current & previous knowledge. (And ignore the rest).
+ *)
+ let devs =
+ List.map (
+ fun (name, rd) ->
+ List.filter_map (
+ fun (dev, stats) ->
+ try
+ (* Have prev slice stats for this device? *)
+ let prev_stats =
+ List.assoc dev rd.rd_prev_interface_stats in
+ Some (dev, name, rd, stats, prev_stats)
+ with Not_found -> None
+ ) rd.rd_interface_stats
+ ) doms in
+
+ (* Finally we have a list of:
+ * device name, domain name, rd_* stuff, curr stats, prev stats.
+ *)
+ let devs : (string * string * rd_active *
+ D.interface_stats * D.interface_stats) list =
+ List.flatten devs in
+
+ (* Difference curr slice & prev slice. *)
+ let devs =
+ List.map (
+ fun (dev, name, rd, curr, prev) ->
+ dev, name, rd, diff_interface_stats curr prev
+ ) devs in
+
+ (* Sort by current sort order, but map some of the standard
+ * sort orders into ones which makes sense here.
+ *)
+ let devs =
+ let cmp =
+ match sort_order with
+ | DomainName ->
+ (fun _ -> 0) (* fallthrough to default name compare *)
+ | DomainID ->
+ (fun (_, { rd_domid = id1 }, _, { rd_domid = id2 }) ->
+ compare id1 id2)
+ | Processor | Memory | Time
+ | BlockRdRq | BlockWrRq
+ (* fallthrough to RXBY comparison. *)
+ | NetRX ->
+ (fun ({ D.rx_bytes = b1 }, _, { D.rx_bytes = b2 }, _) ->
+ compare b2 b1)
+ | NetTX ->
+ (fun ({ D.tx_bytes = b1 }, _, { D.tx_bytes = b2 }, _) ->
+ compare b2 b1)
+ in
+ let cmp (dev1, name1, rd1, stats1) (dev2, name2, rd2, stats2) =
+ let r = cmp (stats1, rd1, stats2, rd2) in
+ if r <> 0 then r
+ else compare (dev1, name1) (dev2, name2)
+ in
+ List.sort ~cmp devs in
+
+ (* Print the header for network devices. *)
+ attron A.reverse;
+ mvaddstr header_lineno 0
+ (pad cols " ID S RXBY TXBY RXPK TXPK DOMAIN INTERFACE");
+ attroff A.reverse;
+
+ (* Print domains and devices. *)
+ let rec loop lineno = function
+ | [] -> ()
+ | (dev, name, rd, stats) :: devs ->
+ if lineno < lines then (
+ let state = show_state rd.rd_info.D.state in
+ let rx_bytes =
+ if stats.D.rx_bytes >= 0L
+ then Show.int64 stats.D.rx_bytes
+ else " " in
+ let tx_bytes =
+ if stats.D.tx_bytes >= 0L
+ then Show.int64 stats.D.tx_bytes
+ else " " in
+ let rx_packets =
+ if stats.D.rx_packets >= 0L
+ then Show.int64 stats.D.rx_packets
+ else " " in
+ let tx_packets =
+ if stats.D.tx_packets >= 0L
+ then Show.int64 stats.D.tx_packets
+ else " " in
+
+ let line = sprintf "%5d %c %s %s %s %s %-12s %s"
+ rd.rd_domid state
+ rx_bytes tx_bytes
+ rx_packets tx_packets
+ (pad 12 name) dev in
+ let line = pad cols line in
+ mvaddstr lineno 0 line;
+ loop (lineno+1) devs
+ )
+ in
+ loop domains_lineno devs
+
+ (*---------- Showing block devices ----------*)
+ | BlockDisplay ->
+ (* Only care about active domains. *)
+ let doms =
+ List.filter_map (
+ function
+ | (name, Active rd) -> Some (name, rd)
+ | (_, Inactive) -> None
+ ) doms in
+
+ (* For each domain we have a list of block devices seen
+ * this slice, and seen in the previous slice, which we now
+ * match up to get a list of (domain, device) for which
+ * we have current & previous knowledge. (And ignore the rest).
+ *)
+ let devs =
+ List.map (
+ fun (name, rd) ->
+ List.filter_map (
+ fun (dev, stats) ->
+ try
+ (* Have prev slice stats for this device? *)
+ let prev_stats =
+ List.assoc dev rd.rd_prev_block_stats in
+ Some (dev, name, rd, stats, prev_stats)
+ with Not_found -> None
+ ) rd.rd_block_stats
+ ) doms in
+
+ (* Finally we have a list of:
+ * device name, domain name, rd_* stuff, curr stats, prev stats.
+ *)
+ let devs : (string * string * rd_active *
+ D.block_stats * D.block_stats) list =
+ List.flatten devs in
+
+ (* Difference curr slice & prev slice. *)
+ let devs =
+ List.map (
+ fun (dev, name, rd, curr, prev) ->
+ dev, name, rd, diff_block_stats curr prev
+ ) devs in
+
+ (* Sort by current sort order, but map some of the standard
+ * sort orders into ones which makes sense here.
+ *)
+ let devs =
+ let cmp =
+ match sort_order with
+ | DomainName ->
+ (fun _ -> 0) (* fallthrough to default name compare *)
+ | DomainID ->
+ (fun (_, { rd_domid = id1 }, _, { rd_domid = id2 }) ->
+ compare id1 id2)
+ | Processor | Memory | Time
+ | NetRX | NetTX
+ (* fallthrough to RDRQ comparison. *)
+ | BlockRdRq ->
+ (fun ({ D.rd_req = b1 }, _, { D.rd_req = b2 }, _) ->
+ compare b2 b1)
+ | BlockWrRq ->
+ (fun ({ D.wr_req = b1 }, _, { D.wr_req = b2 }, _) ->
+ compare b2 b1)
+ in
+ let cmp (dev1, name1, rd1, stats1) (dev2, name2, rd2, stats2) =
+ let r = cmp (stats1, rd1, stats2, rd2) in
+ if r <> 0 then r
+ else compare (dev1, name1) (dev2, name2)
+ in
+ List.sort ~cmp devs in
+
+ (* Print the header for block devices. *)
+ attron A.reverse;
+ mvaddstr header_lineno 0
+ (pad cols " ID S RDBY WRBY RDRQ WRRQ DOMAIN DEVICE");
+ attroff A.reverse;
+
+ (* Print domains and devices. *)
+ let rec loop lineno = function
+ | [] -> ()
+ | (dev, name, rd, stats) :: devs ->
+ if lineno < lines then (
+ let state = show_state rd.rd_info.D.state in
+ let rd_bytes =
+ if stats.D.rd_bytes >= 0L
+ then Show.int64 stats.D.rd_bytes
+ else " " in
+ let wr_bytes =
+ if stats.D.wr_bytes >= 0L
+ then Show.int64 stats.D.wr_bytes
+ else " " in
+ let rd_req =
+ if stats.D.rd_req >= 0L
+ then Show.int64 stats.D.rd_req
+ else " " in
+ let wr_req =
+ if stats.D.wr_req >= 0L
+ then Show.int64 stats.D.wr_req
+ else " " in
+
+ let line = sprintf "%5d %c %s %s %s %s %-12s %s"
+ rd.rd_domid state
+ rd_bytes wr_bytes
+ rd_req wr_req
+ (pad 12 name) dev in
+ let line = pad cols line in
+ mvaddstr lineno 0 line;
+ loop (lineno+1) devs
+ )
+ in
+ loop domains_lineno devs
+ ); (* end of display_mode conditional section *)
+
+ let (count, running, blocked, paused, shutdown, shutoff,
+ crashed, active, inactive,
+ total_cpu_time, total_memory, total_domU_memory) = totals in
+
+ mvaddstr summary_lineno 0
+ (sprintf
+ (f_"%d domains, %d active, %d running, %d sleeping, %d paused, %d inactive D:%d O:%d X:%d")
+ count active running blocked paused inactive shutdown shutoff crashed);
+
+ (* Total %CPU used, and memory summary. *)
+ let percent_cpu = 100. *. total_cpu_time /. total_cpu in
+ mvaddstr (summary_lineno+1) 0
+ (sprintf
+ (f_"CPU: %2.1f%% Mem: %Ld MB (%Ld MB by guests)")
+ percent_cpu (total_memory /^ 1024L) (total_domU_memory /^ 1024L));
+
+ (* Time to grab another historical %CPU for the list? *)
+ if time >= !historical_cpu_last_time +. float historical_cpu_delay
+ then (
+ historical_cpu := percent_cpu :: List.take 10 !historical_cpu;
+ historical_cpu_last_time := time
+ );
+
+ (* Display historical CPU time. *)
+ let () =
+ let y, x = historical_cursor in
+ let maxwidth = cols - x in
+ let line =
+ String.concat " "
+ (List.map (sprintf "%2.1f%%") !historical_cpu) in
+ let line = pad maxwidth line in
+ mvaddstr y x line;
+ () in
+
+ move message_lineno 0; (* Park cursor in message area, as with top. *)
+ refresh () (* Refresh the display. *)
diff --git a/src/redraw.mli b/src/redraw.mli
new file mode 100644
index 0000000..2ea97c3
--- /dev/null
+++ b/src/redraw.mli
@@ -0,0 +1,20 @@
+(* 'top'-like tool for libvirt domains.
+ (C) Copyright 2007-2017 Richard W.M. Jones, Red Hat Inc.
+ http://libvirt.org/
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*)
+
+val redraw : Types.display -> Types.sort_order -> Types.setup -> bool -> int -> Collect.stats -> Collect.pcpu_stats option -> unit
diff --git a/src/screen.ml b/src/screen.ml
new file mode 100644
index 0000000..0d847a2
--- /dev/null
+++ b/src/screen.ml
@@ -0,0 +1,52 @@
+(* 'top'-like tool for libvirt domains.
+ (C) Copyright 2007-2017 Richard W.M. Jones, Red Hat Inc.
+ http://libvirt.org/
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*)
+
+(* The virt-top screen layout. *)
+
+open Curses
+
+module D = Libvirt.Domain
+
+(* Line numbers. *)
+let top_lineno = 0
+let summary_lineno = 1 (* this takes 2 lines *)
+let message_lineno = 3
+let header_lineno = 4
+let domains_lineno = 5
+
+(* Easier to use versions of curses functions addstr, mvaddstr, etc. *)
+let move y x = ignore (move y x)
+let refresh () = ignore (refresh ())
+let addch c = ignore (addch (int_of_char c))
+let addstr s = ignore (addstr s)
+let mvaddstr y x s = ignore (mvaddstr y x s)
+
+(* Print in the "message area". *)
+let clear_msg () = move message_lineno 0; clrtoeol ()
+let print_msg str = clear_msg (); mvaddstr message_lineno 0 str
+
+(* Show a libvirt domain state (the 'S' column). *)
+let show_state = function
+ | D.InfoNoState -> '?'
+ | D.InfoRunning -> 'R'
+ | D.InfoBlocked -> 'S'
+ | D.InfoPaused -> 'P'
+ | D.InfoShutdown -> 'D'
+ | D.InfoShutoff -> 'O'
+ | D.InfoCrashed -> 'X'
diff --git a/src/screen.mli b/src/screen.mli
new file mode 100644
index 0000000..a8a23a0
--- /dev/null
+++ b/src/screen.mli
@@ -0,0 +1,41 @@
+(* 'top'-like tool for libvirt domains.
+ (C) Copyright 2007-2017 Richard W.M. Jones, Red Hat Inc.
+ http://libvirt.org/
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*)
+
+(** The virt-top screen layout. *)
+
+(* Line numbers. *)
+val top_lineno : int
+val summary_lineno : int (** this takes 2 lines *)
+val message_lineno : int
+val header_lineno : int
+val domains_lineno : int
+
+(* Easier to use versions of curses functions addstr, mvaddstr, etc. *)
+val move : int -> int -> unit
+val refresh : unit -> unit
+val addch : char -> unit
+val addstr : string -> unit
+val mvaddstr : int -> int -> string -> unit
+
+(* Print in the "message area". *)
+val clear_msg : unit -> unit
+val print_msg : string -> unit
+
+(* Show a libvirt domain state (the 'S' column). *)
+val show_state : Libvirt.Domain.state -> char
diff --git a/src/stream_output.ml b/src/stream_output.ml
new file mode 100644
index 0000000..bf7b114
--- /dev/null
+++ b/src/stream_output.ml
@@ -0,0 +1,84 @@
+(* 'top'-like tool for libvirt domains.
+ (C) Copyright 2007-2017 Richard W.M. Jones, Red Hat Inc.
+ http://libvirt.org/
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*)
+
+(* [--stream] mode output functions. *)
+
+open Printf
+open ExtList
+
+open Utils
+open Collect
+
+module C = Libvirt.Connect
+module D = Libvirt.Domain
+
+let append_stream (_, _, _, _, _, node_info, hostname, _) (* setup *)
+ block_in_bytes
+ { rd_doms = doms;
+ rd_printable_time = printable_time;
+ rd_nr_pcpus = nr_pcpus; rd_total_cpu = total_cpu;
+ rd_totals = totals } (* state *) =
+ (* Header for this iteration *)
+ printf "virt-top time %s Host %s %s %d/%dCPU %dMHz %LdMB \n"
+ printable_time hostname node_info.C.model node_info.C.cpus nr_pcpus
+ node_info.C.mhz (node_info.C.memory /^ 1024L);
+ (* dump domain information one by one *)
+ let rd, wr = if block_in_bytes then "RDBY", "WRBY" else "RDRQ", "WRRQ"
+ in
+ printf " ID S %s %s RXBY TXBY %%CPU %%MEM TIME NAME\n" rd wr;
+
+ (* sort by ID *)
+ let doms =
+ let compare =
+ (function
+ | Active {rd_domid = id1 }, Active {rd_domid = id2} ->
+ compare id1 id2
+ | Active _, Inactive -> -1
+ | Inactive, Active _ -> 1
+ | Inactive, Inactive -> 0)
+ in
+ let cmp (name1, dom1) (name2, dom2) = compare(dom1, dom2) in
+ List.sort ~cmp doms in
+ (*Print domains *)
+ let dump_domain = fun name rd
+ -> begin
+ let state = Screen.show_state rd.rd_info.D.state in
+ let rd_req = if rd.rd_block_rd_info = None then " 0"
+ else Show.int64_option rd.rd_block_rd_info in
+ let wr_req = if rd.rd_block_wr_info = None then " 0"
+ else Show.int64_option rd.rd_block_wr_info in
+ let rx_bytes = if rd.rd_net_rx_bytes = None then " 0"
+ else Show.int64_option rd.rd_net_rx_bytes in
+ let tx_bytes = if rd.rd_net_tx_bytes = None then " 0"
+ else Show.int64_option rd.rd_net_tx_bytes in
+ let percent_cpu = Show.percent rd.rd_percent_cpu in
+ let percent_mem = Int64.to_float rd.rd_mem_percent in
+ let percent_mem = Show.percent percent_mem in
+ let time = Show.time rd.rd_info.D.cpu_time in
+ printf "%5d %c %s %s %s %s %s %s %s %s\n"
+ rd.rd_domid state rd_req wr_req rx_bytes tx_bytes
+ percent_cpu percent_mem time name;
+ end
+ in
+ List.iter (
+ function
+ | name, Active dom -> dump_domain name dom
+ | name, Inactive -> ()
+ ) doms;
+ flush stdout
diff --git a/src/stream_output.mli b/src/stream_output.mli
new file mode 100644
index 0000000..c45e548
--- /dev/null
+++ b/src/stream_output.mli
@@ -0,0 +1,22 @@
+(* 'top'-like tool for libvirt domains.
+ (C) Copyright 2007-2017 Richard W.M. Jones, Red Hat Inc.
+ http://libvirt.org/
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*)
+
+(** [--stream] mode output functions. *)
+
+val append_stream : Types.setup -> bool -> Collect.stats -> unit
diff --git a/src/top.ml b/src/top.ml
index f50e6a8..204f3b6 100644
--- a/src/top.ml
+++ b/src/top.ml
@@ -1,5 +1,5 @@
(* 'top'-like tool for libvirt domains.
- (C) Copyright 2007-2009 Richard W.M. Jones, Red Hat Inc.
+ (C) Copyright 2007-2017 Richard W.M. Jones, Red Hat Inc.
http://libvirt.org/
This program is free software; you can redistribute it and/or modify
@@ -23,6 +23,9 @@ open Curses
open Opt_gettext.Gettext
open Utils
+open Types
+open Collect
+open Screen
module C = Libvirt.Connect
module D = Libvirt.Domain
@@ -30,21 +33,11 @@ module N = Libvirt.Network
let rcfile = ".virt-toprc"
-(* Hook for XML support (see [opt_xml.ml]). *)
-let parse_device_xml : (int -> [>`R] D.t -> string list * string list) ref =
- ref (
- fun _ _ -> [], []
- )
-
(* Hooks for CSV support (see [opt_csv.ml]). *)
let csv_start : (string -> unit) ref =
ref (
fun _ -> failwith (s_"virt-top was compiled without support for CSV files")
)
-let csv_write : (string list -> unit) ref =
- ref (
- fun _ -> ()
- )
(* Hook for calendar support (see [opt_calendar.ml]). *)
let parse_date_time : (string -> float) ref =
@@ -53,62 +46,6 @@ let parse_date_time : (string -> float) ref =
failwith (s_"virt-top was compiled without support for dates and times")
)
-(* Sort order. *)
-type sort_order =
- | DomainID | DomainName | Processor | Memory | Time
- | NetRX | NetTX | BlockRdRq | BlockWrRq
-let all_sort_fields = [
- DomainID; DomainName; Processor; Memory; Time;
- NetRX; NetTX; BlockRdRq; BlockWrRq
-]
-let printable_sort_order = function
- | Processor -> s_"%CPU"
- | Memory -> s_"%MEM"
- | Time -> s_"TIME (CPU time)"
- | DomainID -> s_"Domain ID"
- | DomainName -> s_"Domain name"
- | NetRX -> s_"Net RX bytes"
- | NetTX -> s_"Net TX bytes"
- | BlockRdRq -> s_"Block read reqs"
- | BlockWrRq -> s_"Block write reqs"
-let sort_order_of_cli = function
- | "cpu" | "processor" -> Processor
- | "mem" | "memory" -> Memory
- | "time" -> Time
- | "id" -> DomainID
- | "name" -> DomainName
- | "netrx" -> NetRX | "nettx" -> NetTX
- | "blockrdrq" -> BlockRdRq | "blockwrrq" -> BlockWrRq
- | str ->
- failwithf (f_"%s: sort order should be: %s")
- str "cpu|mem|time|id|name|netrx|nettx|blockrdrq|blockwrrq"
-let cli_of_sort_order = function
- | Processor -> "cpu"
- | Memory -> "mem"
- | Time -> "time"
- | DomainID -> "id"
- | DomainName -> "name"
- | NetRX -> "netrx"
- | NetTX -> "nettx"
- | BlockRdRq -> "blockrdrq"
- | BlockWrRq -> "blockwrrq"
-
-(* Current major display mode: TaskDisplay is the normal display. *)
-type display = TaskDisplay | PCPUDisplay | BlockDisplay | NetDisplay
-
-let display_of_cli = function
- | "task" -> TaskDisplay
- | "pcpu" -> PCPUDisplay
- | "block" -> BlockDisplay
- | "net" -> NetDisplay
- | str ->
- failwithf (f_"%s: display should be %s") str "task|pcpu|block|net"
-let cli_of_display = function
- | TaskDisplay -> "task"
- | PCPUDisplay -> "pcpu"
- | BlockDisplay -> "block"
- | NetDisplay -> "net"
-
(* Init file. *)
type init_file = NoInitFile | DefaultInitFile | InitFile of string
@@ -134,11 +71,6 @@ let script_mode = ref false
let stream_mode = ref false
let block_in_bytes = ref false
-(* Tuple of never-changing data returned by start_up function. *)
-type setup =
- Libvirt.ro C.t * bool * bool * bool * bool * C.node_info * string *
- (int * int * int)
-
(* Function to read command line arguments and go into curses mode. *)
let start_up () =
(* Read command line arguments. *)
@@ -352,16 +284,6 @@ OPTIONS" in
node_info, hostname, libvirt_version (* info that doesn't change *)
)
-(* Show a domain state (the 'S' column). *)
-let show_state = function
- | D.InfoNoState -> '?'
- | D.InfoRunning -> 'R'
- | D.InfoBlocked -> 'S'
- | D.InfoPaused -> 'P'
- | D.InfoShutdown -> 'D'
- | D.InfoShutoff -> 'O'
- | D.InfoCrashed -> 'X'
-
(* Sleep in seconds. *)
let sleep = Unix.sleep
@@ -387,1039 +309,33 @@ let get_string maxlen =
Not_found -> str (* it is full maxlen bytes *)
)
-(* Line numbers. *)
-let top_lineno = 0
-let summary_lineno = 1 (* this takes 2 lines *)
-let message_lineno = 3
-let header_lineno = 4
-let domains_lineno = 5
-
-(* Easier to use versions of curses functions addstr, mvaddstr, etc. *)
-let move y x = ignore (move y x)
-let refresh () = ignore (refresh ())
-let addch c = ignore (addch (int_of_char c))
-let addstr s = ignore (addstr s)
-let mvaddstr y x s = ignore (mvaddstr y x s)
-
-(* Print in the "message area". *)
-let clear_msg () = move message_lineno 0; clrtoeol ()
-let print_msg str = clear_msg (); mvaddstr message_lineno 0 str
-
-(* Intermediate "domain + stats" structure that we use to collect
- * everything we know about a domain within the collect function.
- *)
-type rd_domain = Inactive | Active of rd_active
-and rd_active = {
- rd_domid : int; (* Domain ID. *)
- rd_dom : [`R] D.t; (* Domain object. *)
- rd_info : D.info; (* Domain CPU info now. *)
- rd_block_stats : (string * D.block_stats) list;
- (* Domain block stats now. *)
- rd_interface_stats : (string * D.interface_stats) list;
- (* Domain net stats now. *)
- rd_prev_info : D.info option; (* Domain CPU info previously. *)
- rd_prev_block_stats : (string * D.block_stats) list;
- (* Domain block stats prev. *)
- rd_prev_interface_stats : (string * D.interface_stats) list;
- (* Domain interface stats prev. *)
- (* The following are since the last slice, or 0 if cannot be calculated: *)
- rd_cpu_time : float; (* CPU time used in nanoseconds. *)
- rd_percent_cpu : float; (* CPU time as percent of total. *)
- rd_mem_bytes : int64; (* Memory usage in bytes *)
- rd_mem_percent: int64; (* Memory usage as percent of total *)
- (* The following are since the last slice, or None if cannot be calc'd: *)
- rd_block_rd_reqs : int64 option; (* Number of block device read rqs. *)
- rd_block_wr_reqs : int64 option; (* Number of block device write rqs. *)
- rd_block_rd_bytes : int64 option; (* Number of bytes block device read *)
- rd_block_wr_bytes : int64 option; (* Number of bytes block device write *)
- (* _info fields includes the number considering --block_in_bytes option *)
- rd_block_rd_info : int64 option; (* Block device read info for user *)
- rd_block_wr_info : int64 option; (* Block device read info for user *)
-
- rd_net_rx_bytes : int64 option; (* Number of bytes received. *)
- rd_net_tx_bytes : int64 option; (* Number of bytes transmitted. *)
-}
-
-(* Collect stats. *)
-let collect, clear_pcpu_display_data =
- (* We cache the list of block devices and interfaces for each domain
- * here, so we don't need to reparse the XML each time.
- *)
- let devices = Hashtbl.create 13 in
-
- (* Function to get the list of block devices, network interfaces for
- * a particular domain. Get it from the devices cache, and if not
- * there then parse the domain XML.
- *)
- let get_devices id dom =
- try Hashtbl.find devices id
- with Not_found ->
- let blkdevs, netifs = (!parse_device_xml) id dom in
- Hashtbl.replace devices id (blkdevs, netifs);
- blkdevs, netifs
- in
-
- (* We save the state of domains across redraws here, which allows us
- * to deduce %CPU usage from the running total.
- *)
- let last_info = Hashtbl.create 13 in
- let last_time = ref (Unix.gettimeofday ()) in
-
- (* Save pcpu_usages structures across redraws too (only for pCPU display). *)
- let last_pcpu_usages = Hashtbl.create 13 in
-
- let clear_pcpu_display_data () =
- (* Clear out pcpu_usages used by PCPUDisplay display_mode
- * when we switch back to TaskDisplay mode.
- *)
- Hashtbl.clear last_pcpu_usages
- in
-
- let collect (conn, _, _, _, _, node_info, _, _) =
- (* Number of physical CPUs (some may be disabled). *)
- let nr_pcpus = C.maxcpus_of_node_info node_info in
-
- (* Get the current time. *)
- let time = Unix.gettimeofday () in
- let tm = Unix.localtime time in
- let printable_time =
- sprintf "%02d:%02d:%02d" tm.Unix.tm_hour tm.Unix.tm_min tm.Unix.tm_sec in
-
- (* What's the total CPU time elapsed since we were last called? (ns) *)
- let total_cpu_per_pcpu = 1_000_000_000. *. (time -. !last_time) in
- (* Avoid division by zero. *)
- let total_cpu_per_pcpu =
- if total_cpu_per_pcpu <= 0. then 1. else total_cpu_per_pcpu in
- let total_cpu = float node_info.C.cpus *. total_cpu_per_pcpu in
-
- (* Get the domains. Match up with their last_info (if any). *)
- let doms =
- (* Active domains. *)
- let n = C.num_of_domains conn in
- let ids =
- if n > 0 then Array.to_list (C.list_domains conn n)
- else [] in
- let doms =
- List.filter_map (
- fun id ->
- try
- let dom = D.lookup_by_id conn id in
- let name = D.get_name dom in
- let blkdevs, netifs = get_devices id dom in
-
- (* Get current CPU, block and network stats. *)
- let info = D.get_info dom in
- let block_stats =
- try List.map (fun dev -> dev, D.block_stats dom dev) blkdevs
- with
- | Libvirt.Not_supported "virDomainBlockStats"
- | Libvirt.Virterror _ -> [] in
- let interface_stats =
- try List.map (fun dev -> dev, D.interface_stats dom dev) netifs
- with
- | Libvirt.Not_supported "virDomainInterfaceStats"
- | Libvirt.Virterror _ -> [] in
-
- let prev_info, prev_block_stats, prev_interface_stats =
- try
- let prev_info, prev_block_stats, prev_interface_stats =
- Hashtbl.find last_info id in
- Some prev_info, prev_block_stats, prev_interface_stats
- with Not_found -> None, [], [] in
-
- Some (name, Active {
- rd_domid = id; rd_dom = dom; rd_info = info;
- rd_block_stats = block_stats;
- rd_interface_stats = interface_stats;
- rd_prev_info = prev_info;
- rd_prev_block_stats = prev_block_stats;
- rd_prev_interface_stats = prev_interface_stats;
- rd_cpu_time = 0.; rd_percent_cpu = 0.;
- rd_mem_bytes = 0L; rd_mem_percent = 0L;
- rd_block_rd_reqs = None; rd_block_wr_reqs = None;
- rd_block_rd_bytes = None; rd_block_wr_bytes = None;
- rd_block_rd_info = None; rd_block_wr_info = None;
- rd_net_rx_bytes = None; rd_net_tx_bytes = None;
- })
- with
- Libvirt.Virterror _ -> None (* ignore transient error *)
- ) ids in
-
- (* Inactive domains. *)
- let doms_inactive =
- try
- let n = C.num_of_defined_domains conn in
- let names =
- if n > 0 then Array.to_list (C.list_defined_domains conn n)
- else [] in
- List.map (fun name -> name, Inactive) names
- with
- (* Ignore transient errors, in particular errors from
- * num_of_defined_domains if it cannot contact xend.
- *)
- | Libvirt.Virterror _ -> [] in
-
- doms @ doms_inactive in
-
- (* Calculate the CPU time (ns) and %CPU used by each domain. *)
- let doms =
- List.map (
- function
- (* We have previous CPU info from which to calculate it? *)
- | name, Active ({ rd_prev_info = Some prev_info } as rd) ->
- let cpu_time =
- Int64.to_float (rd.rd_info.D.cpu_time -^ prev_info.D.cpu_time) in
- let percent_cpu = 100. *. cpu_time /. total_cpu in
- let mem_usage = rd.rd_info.D.memory in
- let mem_percent =
- 100L *^ rd.rd_info.D.memory /^ node_info.C.memory in
- let rd = { rd with
- rd_cpu_time = cpu_time;
- rd_percent_cpu = percent_cpu;
- rd_mem_bytes = mem_usage;
- rd_mem_percent = mem_percent} in
- name, Active rd
- (* For all other domains we can't calculate it, so leave as 0 *)
- | rd -> rd
- ) doms in
-
- (* Calculate the number of block device read/write requests across
- * all block devices attached to a domain.
- *)
- let doms =
- List.map (
- function
- (* Do we have stats from the previous slice? *)
- | name, Active ({ rd_prev_block_stats = ((_::_) as prev_block_stats) }
- as rd) ->
- let block_stats = rd.rd_block_stats in (* stats now *)
-
- (* Add all the devices together. Throw away device names. *)
- let prev_block_stats =
- sum_block_stats (List.map snd prev_block_stats) in
- let block_stats =
- sum_block_stats (List.map snd block_stats) in
-
- (* Calculate increase in read & write requests. *)
- let read_reqs =
- block_stats.D.rd_req -^ prev_block_stats.D.rd_req in
- let write_reqs =
- block_stats.D.wr_req -^ prev_block_stats.D.wr_req in
- let read_bytes =
- block_stats.D.rd_bytes -^ prev_block_stats.D.rd_bytes in
- let write_bytes =
- block_stats.D.wr_bytes -^ prev_block_stats.D.wr_bytes in
-
- let rd = { rd with
- rd_block_rd_reqs = Some read_reqs;
- rd_block_wr_reqs = Some write_reqs;
- rd_block_rd_bytes = Some read_bytes;
- rd_block_wr_bytes = Some write_bytes;
- } in
- let rd = { rd with
- rd_block_rd_info = if !block_in_bytes then
- rd.rd_block_rd_bytes else rd.rd_block_rd_reqs;
- rd_block_wr_info = if !block_in_bytes then
- rd.rd_block_wr_bytes else rd.rd_block_wr_reqs;
- } in
- name, Active rd
- (* For all other domains we can't calculate it, so leave as None. *)
- | rd -> rd
- ) doms in
-
- (* Calculate the same as above for network interfaces across
- * all network interfaces attached to a domain.
- *)
- let doms =
- List.map (
- function
- (* Do we have stats from the previous slice? *)
- | name, Active ({ rd_prev_interface_stats =
- ((_::_) as prev_interface_stats) }
- as rd) ->
- let interface_stats = rd.rd_interface_stats in (* stats now *)
-
- (* Add all the devices together. Throw away device names. *)
- let prev_interface_stats =
- sum_interface_stats (List.map snd prev_interface_stats) in
- let interface_stats =
- sum_interface_stats (List.map snd interface_stats) in
-
- (* Calculate increase in rx & tx bytes. *)
- let rx_bytes =
- interface_stats.D.rx_bytes -^ prev_interface_stats.D.rx_bytes in
- let tx_bytes =
- interface_stats.D.tx_bytes -^ prev_interface_stats.D.tx_bytes in
-
- let rd = { rd with
- rd_net_rx_bytes = Some rx_bytes;
- rd_net_tx_bytes = Some tx_bytes } in
- name, Active rd
- (* For all other domains we can't calculate it, so leave as None. *)
- | rd -> rd
- ) doms in
-
- (* Collect some extra information in PCPUDisplay display_mode. *)
- let pcpu_display =
- if !display_mode = PCPUDisplay then (
- (* Get the VCPU info and VCPU->PCPU mappings for active domains.
- * Also cull some data we don't care about.
- *)
- let doms = List.filter_map (
- function
- | (name, Active rd) ->
- (try
- let domid = rd.rd_domid in
- let maplen = C.cpumaplen nr_pcpus in
- let cpu_stats = D.get_cpu_stats rd.rd_dom in
-
- (* Note the terminology is confusing.
- *
- * In libvirt, cpu_time is the total time (hypervisor + vCPU).
- * vcpu_time is the time only taken by the vCPU,
- * excluding time taken inside the hypervisor.
- *
- * For each pCPU, libvirt may return either "cpu_time"
- * or "vcpu_time" or neither or both. This function
- * returns an array pair [|cpu_time, vcpu_time|];
- * if either is missing it is returned as 0.
- *)
- let find_cpu_usages params =
- let rec find_uint64_field name = function
- | (n, D.TypedFieldUInt64 usage) :: _ when n = name -> usage
- | _ :: params -> find_uint64_field name params
- | [] -> 0L
- in
- [| find_uint64_field "cpu_time" params;
- find_uint64_field "vcpu_time" params |]
- in
-
- let pcpu_usages = Array.map find_cpu_usages cpu_stats in
- let maxinfo = rd.rd_info.D.nr_virt_cpu in
- let nr_vcpus, vcpu_infos, cpumaps =
- D.get_vcpus rd.rd_dom maxinfo maplen in
-
- (* Got previous pcpu_usages for this domain? *)
- let prev_pcpu_usages =
- try Some (Hashtbl.find last_pcpu_usages domid)
- with Not_found -> None in
- (* Update last_pcpu_usages. *)
- Hashtbl.replace last_pcpu_usages domid pcpu_usages;
-
- (match prev_pcpu_usages with
- | Some prev_pcpu_usages
- when Array.length prev_pcpu_usages = Array.length pcpu_usages ->
- Some (domid, name, nr_vcpus, vcpu_infos, pcpu_usages,
- prev_pcpu_usages, cpumaps, maplen)
- | _ -> None (* ignore missing / unequal length prev_vcpu_infos *)
- );
- with
- Libvirt.Virterror _ -> None(* ignore transient libvirt errs *)
- )
- | (_, Inactive) -> None (* ignore inactive doms *)
- ) doms in
- let nr_doms = List.length doms in
-
- (* Rearrange the data into a matrix. Major axis (down) is
- * pCPUs. Minor axis (right) is domains. At each node we store:
- * cpu_time hypervisor + domain (on this pCPU only, nanosecs),
- * vcpu_time domain only (on this pCPU only, nanosecs).
- *)
- let make_3d_array dimx dimy dimz e =
- Array.init dimx (fun _ -> Array.make_matrix dimy dimz e)
- in
- let pcpus = make_3d_array nr_pcpus nr_doms 2 0L in
-
- List.iteri (
- fun di (domid, name, nr_vcpus, vcpu_infos, pcpu_usages,
- prev_pcpu_usages, cpumaps, maplen) ->
- (* Which pCPUs can this dom run on? *)
- for p = 0 to Array.length pcpu_usages - 1 do
- pcpus.(p).(di).(0) <-
- pcpu_usages.(p).(0) -^ prev_pcpu_usages.(p).(0);
- pcpus.(p).(di).(1) <-
- pcpu_usages.(p).(1) -^ prev_pcpu_usages.(p).(1)
- done
- ) doms;
-
- (* Sum the total CPU time used by each pCPU, for the %CPU column. *)
- let pcpus_cpu_time = Array.map (
- fun row ->
- let cpu_time = ref 0L in
- for di = 0 to Array.length row-1 do
- let t = row.(di).(0) in
- cpu_time := !cpu_time +^ t
- done;
- Int64.to_float !cpu_time
- ) pcpus in
-
- Some (doms, pcpus, pcpus_cpu_time)
- ) else
- None in
-
- (* Calculate totals. *)
- let totals = List.fold_left (
- fun (count, running, blocked, paused, shutdown, shutoff,
- crashed, active, inactive,
- total_cpu_time, total_memory, total_domU_memory) ->
- function
- | (name, Active rd) ->
- let test state orig =
- if rd.rd_info.D.state = state then orig+1 else orig
- in
- let running = test D.InfoRunning running in
- let blocked = test D.InfoBlocked blocked in
- let paused = test D.InfoPaused paused in
- let shutdown = test D.InfoShutdown shutdown in
- let shutoff = test D.InfoShutoff shutoff in
- let crashed = test D.InfoCrashed crashed in
-
- let total_cpu_time = total_cpu_time +. rd.rd_cpu_time in
- let total_memory = total_memory +^ rd.rd_info.D.memory in
- let total_domU_memory = total_domU_memory +^
- if rd.rd_domid > 0 then rd.rd_info.D.memory else 0L in
-
- (count+1, running, blocked, paused, shutdown, shutoff,
- crashed, active+1, inactive,
- total_cpu_time, total_memory, total_domU_memory)
-
- | (name, Inactive) -> (* inactive domain *)
- (count+1, running, blocked, paused, shutdown, shutoff,
- crashed, active, inactive+1,
- total_cpu_time, total_memory, total_domU_memory)
- ) (0,0,0,0,0,0,0,0,0, 0.,0L,0L) doms in
-
- (* Update last_time, last_info. *)
- last_time := time;
- Hashtbl.clear last_info;
- List.iter (
- function
- | (_, Active rd) ->
- let info = rd.rd_info, rd.rd_block_stats, rd.rd_interface_stats in
- Hashtbl.add last_info rd.rd_domid info
- | _ -> ()
- ) doms;
-
- (doms,
- time, printable_time,
- nr_pcpus, total_cpu, total_cpu_per_pcpu,
- totals,
- pcpu_display)
- in
-
- collect, clear_pcpu_display_data
-
-(* Redraw the display. *)
-let redraw =
- (* Keep a historical list of %CPU usages. *)
- let historical_cpu = ref [] in
- let historical_cpu_last_time = ref (Unix.gettimeofday ()) in
- fun
- (_, _, _, _, _, node_info, _, _) (* setup *)
- (doms,
- time, printable_time,
- nr_pcpus, total_cpu, total_cpu_per_pcpu,
- totals,
- pcpu_display) (* state *) ->
- clear ();
-
- (* Get the screen/window size. *)
- let lines, cols = get_size () in
-
- (* Time. *)
- mvaddstr top_lineno 0 (sprintf "virt-top %s - " printable_time);
-
- (* Basic node_info. *)
- addstr
- (sprintf "%s %d/%dCPU %dMHz %LdMB "
- node_info.C.model node_info.C.cpus nr_pcpus node_info.C.mhz
- (node_info.C.memory /^ 1024L));
- (* Save the cursor position for when we come to draw the
- * historical CPU times (down in this function).
- *)
- let stdscr = stdscr () in
- let historical_cursor = getyx stdscr in
-
- (match !display_mode with
- | TaskDisplay -> (*---------- Showing domains ----------*)
- (* Sort domains on current sort_order. *)
- let doms =
- let cmp =
- match !sort_order with
- | DomainName ->
- (fun _ -> 0) (* fallthrough to default name compare *)
- | Processor ->
- (function
- | Active rd1, Active rd2 ->
- compare rd2.rd_percent_cpu rd1.rd_percent_cpu
- | Active _, Inactive -> -1
- | Inactive, Active _ -> 1
- | Inactive, Inactive -> 0)
- | Memory ->
- (function
- | Active { rd_info = info1 }, Active { rd_info = info2 } ->
- compare info2.D.memory info1.D.memory
- | Active _, Inactive -> -1
- | Inactive, Active _ -> 1
- | Inactive, Inactive -> 0)
- | Time ->
- (function
- | Active { rd_info = info1 }, Active { rd_info = info2 } ->
- compare info2.D.cpu_time info1.D.cpu_time
- | Active _, Inactive -> -1
- | Inactive, Active _ -> 1
- | Inactive, Inactive -> 0)
- | DomainID ->
- (function
- | Active { rd_domid = id1 }, Active { rd_domid = id2 } ->
- compare id1 id2
- | Active _, Inactive -> -1
- | Inactive, Active _ -> 1
- | Inactive, Inactive -> 0)
- | NetRX ->
- (function
- | Active { rd_net_rx_bytes = r1 }, Active { rd_net_rx_bytes = r2 } ->
- compare r2 r1
- | Active _, Inactive -> -1
- | Inactive, Active _ -> 1
- | Inactive, Inactive -> 0)
- | NetTX ->
- (function
- | Active { rd_net_tx_bytes = r1 }, Active { rd_net_tx_bytes = r2 } ->
- compare r2 r1
- | Active _, Inactive -> -1
- | Inactive, Active _ -> 1
- | Inactive, Inactive -> 0)
- | BlockRdRq ->
- (function
- | Active { rd_block_rd_reqs = r1 }, Active { rd_block_rd_reqs = r2 } ->
- compare r2 r1
- | Active _, Inactive -> -1
- | Inactive, Active _ -> 1
- | Inactive, Inactive -> 0)
- | BlockWrRq ->
- (function
- | Active { rd_block_wr_reqs = r1 }, Active { rd_block_wr_reqs = r2 } ->
- compare r2 r1
- | Active _, Inactive -> -1
- | Inactive, Active _ -> 1
- | Inactive, Inactive -> 0)
- in
- let cmp (name1, dom1) (name2, dom2) =
- let r = cmp (dom1, dom2) in
- if r <> 0 then r
- else compare name1 name2
- in
- List.sort ~cmp doms in
-
- (* Print domains. *)
- attron A.reverse;
- let header_string = if !block_in_bytes
- then " ID S RDBY WRBY RXBY TXBY %CPU %MEM TIME NAME"
- else " ID S RDRQ WRRQ RXBY TXBY %CPU %MEM TIME NAME"
- in
- mvaddstr header_lineno 0
- (pad cols header_string);
- attroff A.reverse;
-
- let rec loop lineno = function
- | [] -> ()
- | (name, Active rd) :: doms ->
- if lineno < lines then (
- let state = show_state rd.rd_info.D.state in
- let rd_req = Show.int64_option rd.rd_block_rd_info in
- let wr_req = Show.int64_option rd.rd_block_wr_info in
- let rx_bytes = Show.int64_option rd.rd_net_rx_bytes in
- let tx_bytes = Show.int64_option rd.rd_net_tx_bytes in
- let percent_cpu = Show.percent rd.rd_percent_cpu in
- let percent_mem = Int64.to_float rd.rd_mem_percent in
- let percent_mem = Show.percent percent_mem in
- let time = Show.time rd.rd_info.D.cpu_time in
-
- let line = sprintf "%5d %c %s %s %s %s %s %s %s %s"
- rd.rd_domid state rd_req wr_req rx_bytes tx_bytes
- percent_cpu percent_mem time name in
- let line = pad cols line in
- mvaddstr lineno 0 line;
- loop (lineno+1) doms
- )
- | (name, Inactive) :: doms -> (* inactive domain *)
- if lineno < lines then (
- let line =
- sprintf
- " - (%s)"
- name in
- let line = pad cols line in
- mvaddstr lineno 0 line;
- loop (lineno+1) doms
- )
- in
- loop domains_lineno doms
-
- | PCPUDisplay -> (*---------- Showing physical CPUs ----------*)
- let doms, pcpus, pcpus_cpu_time =
- match pcpu_display with
- | Some p -> p
- | None -> failwith "internal error: no pcpu_display data" in
-
- (* Display the pCPUs. *)
- let dom_names =
- String.concat "" (
- List.map (
- fun (_, name, _, _, _, _, _, _) ->
- let len = String.length name in
- let width = max (len+1) 12 in
- pad width name
- ) doms
- ) in
- attron A.reverse;
- mvaddstr header_lineno 0 (pad cols ("PHYCPU %CPU " ^ dom_names));
- attroff A.reverse;
-
- Array.iteri (
- fun p row ->
- mvaddstr (p+domains_lineno) 0 (sprintf "%4d " p);
- let cpu_time = pcpus_cpu_time.(p) in (* ns used on this CPU *)
- let percent_cpu = 100. *. cpu_time /. total_cpu_per_pcpu in
- addstr (Show.percent percent_cpu);
- addch ' ';
-
- List.iteri (
- fun di (domid, name, _, _, _, _, _, _) ->
- let t = pcpus.(p).(di).(0) in (* hypervisor + domain *)
- let t_only = pcpus.(p).(di).(1) in (* domain only *)
- let len = String.length name in
- let width = max (len+1) 12 in
- let str_t =
- if t <= 0L then ""
- else (
- let t = Int64.to_float t in
- let percent = 100. *. t /. total_cpu_per_pcpu in
- Show.percent percent
- ) in
- let str_t_only =
- if t_only <= 0L then ""
- else (
- let t_only = Int64.to_float t_only in
- let percent = 100. *. t_only /. total_cpu_per_pcpu in
- Show.percent percent
- ) in
- addstr (pad 5 str_t);
- addstr (pad 5 str_t_only);
- addstr (pad (width-10) " ");
- ()
- ) doms
- ) pcpus;
-
- | NetDisplay -> (*---------- Showing network interfaces ----------*)
- (* Only care about active domains. *)
- let doms = List.filter_map (
- function
- | (name, Active rd) -> Some (name, rd)
- | (_, Inactive) -> None
- ) doms in
-
- (* For each domain we have a list of network interfaces seen
- * this slice, and seen in the previous slice, which we now
- * match up to get a list of (domain, interface) for which
- * we have current & previous knowledge. (And ignore the rest).
- *)
- let devs =
- List.map (
- fun (name, rd) ->
- List.filter_map (
- fun (dev, stats) ->
- try
- (* Have prev slice stats for this device? *)
- let prev_stats =
- List.assoc dev rd.rd_prev_interface_stats in
- Some (dev, name, rd, stats, prev_stats)
- with Not_found -> None
- ) rd.rd_interface_stats
- ) doms in
-
- (* Finally we have a list of:
- * device name, domain name, rd_* stuff, curr stats, prev stats.
- *)
- let devs : (string * string * rd_active *
- D.interface_stats * D.interface_stats) list =
- List.flatten devs in
-
- (* Difference curr slice & prev slice. *)
- let devs = List.map (
- fun (dev, name, rd, curr, prev) ->
- dev, name, rd, diff_interface_stats curr prev
- ) devs in
-
- (* Sort by current sort order, but map some of the standard
- * sort orders into ones which makes sense here.
- *)
- let devs =
- let cmp =
- match !sort_order with
- | DomainName ->
- (fun _ -> 0) (* fallthrough to default name compare *)
- | DomainID ->
- (fun (_, { rd_domid = id1 }, _, { rd_domid = id2 }) ->
- compare id1 id2)
- | Processor | Memory | Time | BlockRdRq | BlockWrRq
- (* fallthrough to RXBY comparison. *)
- | NetRX ->
- (fun ({ D.rx_bytes = b1 }, _, { D.rx_bytes = b2 }, _) ->
- compare b2 b1)
- | NetTX ->
- (fun ({ D.tx_bytes = b1 }, _, { D.tx_bytes = b2 }, _) ->
- compare b2 b1)
- in
- let cmp (dev1, name1, rd1, stats1) (dev2, name2, rd2, stats2) =
- let r = cmp (stats1, rd1, stats2, rd2) in
- if r <> 0 then r
- else compare (dev1, name1) (dev2, name2)
- in
- List.sort ~cmp devs in
-
- (* Print the header for network devices. *)
- attron A.reverse;
- mvaddstr header_lineno 0
- (pad cols " ID S RXBY TXBY RXPK TXPK DOMAIN INTERFACE");
- attroff A.reverse;
-
- (* Print domains and devices. *)
- let rec loop lineno = function
- | [] -> ()
- | (dev, name, rd, stats) :: devs ->
- if lineno < lines then (
- let state = show_state rd.rd_info.D.state in
- let rx_bytes =
- if stats.D.rx_bytes >= 0L
- then Show.int64 stats.D.rx_bytes
- else " " in
- let tx_bytes =
- if stats.D.tx_bytes >= 0L
- then Show.int64 stats.D.tx_bytes
- else " " in
- let rx_packets =
- if stats.D.rx_packets >= 0L
- then Show.int64 stats.D.rx_packets
- else " " in
- let tx_packets =
- if stats.D.tx_packets >= 0L
- then Show.int64 stats.D.tx_packets
- else " " in
-
- let line = sprintf "%5d %c %s %s %s %s %-12s %s"
- rd.rd_domid state
- rx_bytes tx_bytes
- rx_packets tx_packets
- (pad 12 name) dev in
- let line = pad cols line in
- mvaddstr lineno 0 line;
- loop (lineno+1) devs
- )
- in
- loop domains_lineno devs
-
- | BlockDisplay -> (*---------- Showing block devices ----------*)
- (* Only care about active domains. *)
- let doms = List.filter_map (
- function
- | (name, Active rd) -> Some (name, rd)
- | (_, Inactive) -> None
- ) doms in
-
- (* For each domain we have a list of block devices seen
- * this slice, and seen in the previous slice, which we now
- * match up to get a list of (domain, device) for which
- * we have current & previous knowledge. (And ignore the rest).
- *)
- let devs =
- List.map (
- fun (name, rd) ->
- List.filter_map (
- fun (dev, stats) ->
- try
- (* Have prev slice stats for this device? *)
- let prev_stats =
- List.assoc dev rd.rd_prev_block_stats in
- Some (dev, name, rd, stats, prev_stats)
- with Not_found -> None
- ) rd.rd_block_stats
- ) doms in
-
- (* Finally we have a list of:
- * device name, domain name, rd_* stuff, curr stats, prev stats.
- *)
- let devs : (string * string * rd_active *
- D.block_stats * D.block_stats) list =
- List.flatten devs in
-
- (* Difference curr slice & prev slice. *)
- let devs = List.map (
- fun (dev, name, rd, curr, prev) ->
- dev, name, rd, diff_block_stats curr prev
- ) devs in
-
- (* Sort by current sort order, but map some of the standard
- * sort orders into ones which makes sense here.
- *)
- let devs =
- let cmp =
- match !sort_order with
- | DomainName ->
- (fun _ -> 0) (* fallthrough to default name compare *)
- | DomainID ->
- (fun (_, { rd_domid = id1 }, _, { rd_domid = id2 }) ->
- compare id1 id2)
- | Processor | Memory | Time | NetRX | NetTX
- (* fallthrough to RDRQ comparison. *)
- | BlockRdRq ->
- (fun ({ D.rd_req = b1 }, _, { D.rd_req = b2 }, _) ->
- compare b2 b1)
- | BlockWrRq ->
- (fun ({ D.wr_req = b1 }, _, { D.wr_req = b2 }, _) ->
- compare b2 b1)
- in
- let cmp (dev1, name1, rd1, stats1) (dev2, name2, rd2, stats2) =
- let r = cmp (stats1, rd1, stats2, rd2) in
- if r <> 0 then r
- else compare (dev1, name1) (dev2, name2)
- in
- List.sort ~cmp devs in
-
- (* Print the header for block devices. *)
- attron A.reverse;
- mvaddstr header_lineno 0
- (pad cols " ID S RDBY WRBY RDRQ WRRQ DOMAIN DEVICE");
- attroff A.reverse;
-
- (* Print domains and devices. *)
- let rec loop lineno = function
- | [] -> ()
- | (dev, name, rd, stats) :: devs ->
- if lineno < lines then (
- let state = show_state rd.rd_info.D.state in
- let rd_bytes =
- if stats.D.rd_bytes >= 0L
- then Show.int64 stats.D.rd_bytes
- else " " in
- let wr_bytes =
- if stats.D.wr_bytes >= 0L
- then Show.int64 stats.D.wr_bytes
- else " " in
- let rd_req =
- if stats.D.rd_req >= 0L
- then Show.int64 stats.D.rd_req
- else " " in
- let wr_req =
- if stats.D.wr_req >= 0L
- then Show.int64 stats.D.wr_req
- else " " in
-
- let line = sprintf "%5d %c %s %s %s %s %-12s %s"
- rd.rd_domid state
- rd_bytes wr_bytes
- rd_req wr_req
- (pad 12 name) dev in
- let line = pad cols line in
- mvaddstr lineno 0 line;
- loop (lineno+1) devs
- )
- in
- loop domains_lineno devs
- ); (* end of display_mode conditional section *)
-
- let (count, running, blocked, paused, shutdown, shutoff,
- crashed, active, inactive,
- total_cpu_time, total_memory, total_domU_memory) = totals in
-
- mvaddstr summary_lineno 0
- (sprintf
- (f_"%d domains, %d active, %d running, %d sleeping, %d paused, %d inactive D:%d O:%d X:%d")
- count active running blocked paused inactive shutdown shutoff crashed);
-
- (* Total %CPU used, and memory summary. *)
- let percent_cpu = 100. *. total_cpu_time /. total_cpu in
- mvaddstr (summary_lineno+1) 0
- (sprintf
- (f_"CPU: %2.1f%% Mem: %Ld MB (%Ld MB by guests)")
- percent_cpu (total_memory /^ 1024L) (total_domU_memory /^ 1024L));
-
- (* Time to grab another historical %CPU for the list? *)
- if time >= !historical_cpu_last_time +. float !historical_cpu_delay
- then (
- historical_cpu := percent_cpu :: List.take 10 !historical_cpu;
- historical_cpu_last_time := time
- );
-
- (* Display historical CPU time. *)
- let () =
- let y, x = historical_cursor in
- let maxwidth = cols - x in
- let line =
- String.concat " "
- (List.map (sprintf "%2.1f%%") !historical_cpu) in
- let line = pad maxwidth line in
- mvaddstr y x line;
- () in
-
- move message_lineno 0; (* Park cursor in message area, as with top. *)
- refresh () (* Refresh the display. *)
-
-(* Write CSV header row. *)
-let write_csv_header () =
- (!csv_write) (
- [ "Hostname"; "Time"; "Arch"; "Physical CPUs";
- "Count"; "Running"; "Blocked"; "Paused"; "Shutdown";
- "Shutoff"; "Crashed"; "Active"; "Inactive";
- "%CPU";
- "Total hardware memory (KB)";
- "Total memory (KB)"; "Total guest memory (KB)";
- "Total CPU time (ns)" ] @
- (* These fields are repeated for each domain: *)
- [ "Domain ID"; "Domain name"; ] @
- (if !csv_cpu then [ "CPU (ns)"; "%CPU"; ] else []) @
- (if !csv_mem then [ "Mem (bytes)"; "%Mem";] else []) @
- (if !csv_block && not !block_in_bytes
- then [ "Block RDRQ"; "Block WRRQ"; ] else []) @
- (if !csv_block && !block_in_bytes
- then [ "Block RDBY"; "Block WRBY"; ] else []) @
- (if !csv_net then [ "Net RXBY"; "Net TXBY" ] else [])
- )
-
-(* Write summary data to CSV file. *)
-let append_csv
- (_, _, _, _, _, node_info, hostname, _) (* setup *)
- (doms,
- _, printable_time,
- nr_pcpus, total_cpu, _,
- totals,
- _) (* state *) =
-
- (* The totals / summary fields. *)
- let (count, running, blocked, paused, shutdown, shutoff,
- crashed, active, inactive,
- total_cpu_time, total_memory, total_domU_memory) = totals in
-
- let percent_cpu = 100. *. total_cpu_time /. total_cpu in
-
- let summary_fields = [
- hostname; printable_time; node_info.C.model; string_of_int nr_pcpus;
- string_of_int count; string_of_int running; string_of_int blocked;
- string_of_int paused; string_of_int shutdown; string_of_int shutoff;
- string_of_int crashed; string_of_int active; string_of_int inactive;
- sprintf "%2.1f" percent_cpu;
- Int64.to_string node_info.C.memory;
- Int64.to_string total_memory; Int64.to_string total_domU_memory;
- Int64.to_string (Int64.of_float total_cpu_time)
- ] in
-
- (* The domains.
- *
- * Sort them by ID so that the list of relatively stable. Ignore
- * inactive domains.
- *)
- let doms = List.filter_map (
- function
- | _, Inactive -> None (* Ignore inactive domains. *)
- | name, Active rd -> Some (name, rd)
- ) doms in
- let cmp (_, { rd_domid = rd_domid1 }) (_, { rd_domid = rd_domid2 }) =
- compare rd_domid1 rd_domid2
- in
- let doms = List.sort ~cmp doms in
-
- let string_of_int64_option = Option.map_default Int64.to_string "" in
-
- let domain_fields = List.map (
- fun (domname, rd) ->
- [ string_of_int rd.rd_domid; domname ] @
- (if !csv_cpu then [
- string_of_float rd.rd_cpu_time; string_of_float rd.rd_percent_cpu
- ] else []) @
- (if !csv_mem then [
- Int64.to_string rd.rd_mem_bytes; Int64.to_string rd.rd_mem_percent
- ] else []) @
- (if !csv_block then [
- string_of_int64_option rd.rd_block_rd_info;
- string_of_int64_option rd.rd_block_wr_info;
- ] else []) @
- (if !csv_net then [
- string_of_int64_option rd.rd_net_rx_bytes;
- string_of_int64_option rd.rd_net_tx_bytes;
- ] else [])
- ) doms in
- let domain_fields = List.flatten domain_fields in
-
- (!csv_write) (summary_fields @ domain_fields)
-
-let dump_stdout
- (_, _, _, _, _, node_info, hostname, _) (* setup *)
- (doms,
- _, printable_time,
- nr_pcpus, total_cpu, _,
- totals,
- _) (* state *) =
-
- (* Header for this iteration *)
- printf "virt-top time %s Host %s %s %d/%dCPU %dMHz %LdMB \n"
- printable_time hostname node_info.C.model node_info.C.cpus nr_pcpus
- node_info.C.mhz (node_info.C.memory /^ 1024L);
- (* dump domain information one by one *)
- let rd, wr = if !block_in_bytes then "RDBY", "WRBY" else "RDRQ", "WRRQ"
- in
- printf " ID S %s %s RXBY TXBY %%CPU %%MEM TIME NAME\n" rd wr;
-
- (* sort by ID *)
- let doms =
- let compare =
- (function
- | Active {rd_domid = id1 }, Active {rd_domid = id2} ->
- compare id1 id2
- | Active _, Inactive -> -1
- | Inactive, Active _ -> 1
- | Inactive, Inactive -> 0)
- in
- let cmp (name1, dom1) (name2, dom2) = compare(dom1, dom2) in
- List.sort ~cmp doms in
- (*Print domains *)
- let dump_domain = fun name rd
- -> begin
- let state = show_state rd.rd_info.D.state in
- let rd_req = if rd.rd_block_rd_info = None then " 0"
- else Show.int64_option rd.rd_block_rd_info in
- let wr_req = if rd.rd_block_wr_info = None then " 0"
- else Show.int64_option rd.rd_block_wr_info in
- let rx_bytes = if rd.rd_net_rx_bytes = None then " 0"
- else Show.int64_option rd.rd_net_rx_bytes in
- let tx_bytes = if rd.rd_net_tx_bytes = None then " 0"
- else Show.int64_option rd.rd_net_tx_bytes in
- let percent_cpu = Show.percent rd.rd_percent_cpu in
- let percent_mem = Int64.to_float rd.rd_mem_percent in
- let percent_mem = Show.percent percent_mem in
- let time = Show.time rd.rd_info.D.cpu_time in
- printf "%5d %c %s %s %s %s %s %s %s %s\n"
- rd.rd_domid state rd_req wr_req rx_bytes tx_bytes
- percent_cpu percent_mem time name;
- end
- in
- List.iter (
- function
- | name, Active dom -> dump_domain name dom
- | name, Inactive -> ()
- ) doms;
- flush stdout
-
(* Main loop. *)
let rec main_loop ((_, batch_mode, script_mode, csv_enabled, stream_mode, _, _, _)
as setup) =
- if csv_enabled then write_csv_header ();
+ let csv_flags = !csv_cpu, !csv_mem, !csv_block, !csv_net in
+
+ if csv_enabled then
+ Csv_output.write_csv_header csv_flags !block_in_bytes;
while not !quit do
- let state = collect setup in (* Collect stats. *)
+ (* Collect stats. *)
+ let state = collect setup !block_in_bytes in
+ let pcpu_display =
+ if !display_mode = PCPUDisplay then Some (collect_pcpu state)
+ else None in
(* Redraw display. *)
- if not script_mode && not stream_mode then redraw setup state;
- if csv_enabled then append_csv setup state; (* Update CSV file. *)
- if stream_mode then dump_stdout setup state; (* dump to stdout *)
+ if not script_mode && not stream_mode then
+ Redraw.redraw !display_mode !sort_order
+ setup !block_in_bytes !historical_cpu_delay
+ state pcpu_display;
+
+ (* Update CSV file. *)
+ if csv_enabled then
+ Csv_output.append_csv setup csv_flags state;
+
+ (* Append to stream output file. *)
+ if stream_mode then
+ Stream_output.append_stream setup !block_in_bytes state;
(* Clear up unused virDomainPtr objects. *)
Gc.compact ();
@@ -1440,11 +356,10 @@ let rec main_loop ((_, batch_mode, script_mode, csv_enabled, stream_mode, _, _,
(* No --end-time option, so use the current delay. *)
!delay
| Some end_time ->
- let (_, time, _, _, _, _, _, _) = state in
let delay_secs = float !delay /. 1000. in
- if end_time <= time +. delay_secs then (
+ if end_time <= state.rd_time +. delay_secs then (
quit := true;
- let delay = int_of_float (1000. *. (end_time -. time)) in
+ let delay = int_of_float (1000. *. (end_time -. state.rd_time)) in
if delay >= 0 then delay else 0
) else
!delay in
diff --git a/src/top.mli b/src/top.mli
index b0953dd..b625910 100644
--- a/src/top.mli
+++ b/src/top.mli
@@ -1,5 +1,5 @@
(* 'top'-like tool for libvirt domains.
- (C) Copyright 2007-2009 Richard W.M. Jones, Red Hat Inc.
+ (C) Copyright 2007-2017 Richard W.M. Jones, Red Hat Inc.
http://libvirt.org/
This program is free software; you can redistribute it and/or modify
@@ -17,23 +17,11 @@
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*)
-(* Hook for [Opt_xml] to override (if present). *)
-val parse_device_xml :
- (int -> [ `R ] Libvirt.Domain.t -> string list * string list) ref
-
-(* Hooks for [Opt_csv] to override (if present). *)
+(* Hook for [Opt_csv] to override (if present). *)
val csv_start : (string -> unit) ref
-val csv_write : (string list -> unit) ref
(* Hook for [Opt_calendar] to override (if present). *)
val parse_date_time : (string -> float) ref
-type setup =
- Libvirt.ro Libvirt.Connect.t (* connection *)
- * bool * bool * bool * bool (* batch, script, csv, stream mode *)
- * Libvirt.Connect.node_info (* node_info *)
- * string (* hostname *)
- * (int * int * int) (* libvirt version *)
-
-val start_up : unit -> setup
-val main_loop : setup -> unit
+val start_up : unit -> Types.setup
+val main_loop : Types.setup -> unit
diff --git a/src/types.ml b/src/types.ml
new file mode 100644
index 0000000..2fdd49b
--- /dev/null
+++ b/src/types.ml
@@ -0,0 +1,147 @@
+(* 'top'-like tool for libvirt domains.
+ (C) Copyright 2007-2017 Richard W.M. Jones, Red Hat Inc.
+ http://libvirt.org/
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*)
+
+open Opt_gettext.Gettext
+open Utils
+
+module C = Libvirt.Connect
+module D = Libvirt.Domain
+
+(* XXX We should get rid of this type. *)
+type setup =
+ Libvirt.ro C.t (* connection *)
+ * bool * bool * bool * bool (* batch, script, csv, stream mode *)
+ * C.node_info (* node_info *)
+ * string (* hostname *)
+ * (int * int * int) (* libvirt version *)
+
+(* Sort order. *)
+type sort_order =
+ | DomainID | DomainName | Processor | Memory | Time
+ | NetRX | NetTX | BlockRdRq | BlockWrRq
+let all_sort_fields = [
+ DomainID; DomainName; Processor; Memory; Time;
+ NetRX; NetTX; BlockRdRq; BlockWrRq
+]
+let printable_sort_order = function
+ | Processor -> s_"%CPU"
+ | Memory -> s_"%MEM"
+ | Time -> s_"TIME (CPU time)"
+ | DomainID -> s_"Domain ID"
+ | DomainName -> s_"Domain name"
+ | NetRX -> s_"Net RX bytes"
+ | NetTX -> s_"Net TX bytes"
+ | BlockRdRq -> s_"Block read reqs"
+ | BlockWrRq -> s_"Block write reqs"
+let sort_order_of_cli = function
+ | "cpu" | "processor" -> Processor
+ | "mem" | "memory" -> Memory
+ | "time" -> Time
+ | "id" -> DomainID
+ | "name" -> DomainName
+ | "netrx" -> NetRX | "nettx" -> NetTX
+ | "blockrdrq" -> BlockRdRq | "blockwrrq" -> BlockWrRq
+ | str ->
+ failwithf (f_"%s: sort order should be: %s")
+ str "cpu|mem|time|id|name|netrx|nettx|blockrdrq|blockwrrq"
+let cli_of_sort_order = function
+ | Processor -> "cpu"
+ | Memory -> "mem"
+ | Time -> "time"
+ | DomainID -> "id"
+ | DomainName -> "name"
+ | NetRX -> "netrx"
+ | NetTX -> "nettx"
+ | BlockRdRq -> "blockrdrq"
+ | BlockWrRq -> "blockwrrq"
+
+(* Current major display mode: TaskDisplay is the normal display. *)
+type display = TaskDisplay | PCPUDisplay | BlockDisplay | NetDisplay
+
+let display_of_cli = function
+ | "task" -> TaskDisplay
+ | "pcpu" -> PCPUDisplay
+ | "block" -> BlockDisplay
+ | "net" -> NetDisplay
+ | str ->
+ failwithf (f_"%s: display should be %s") str "task|pcpu|block|net"
+let cli_of_display = function
+ | TaskDisplay -> "task"
+ | PCPUDisplay -> "pcpu"
+ | BlockDisplay -> "block"
+ | NetDisplay -> "net"
+
+(* Sum Domain.block_stats structures together. Missing fields
+ * get forced to 0. Empty list returns all 0.
+ *)
+let zero_block_stats =
+ { D.rd_req = 0L; rd_bytes = 0L; wr_req = 0L; wr_bytes = 0L; errs = 0L }
+let add_block_stats bs1 bs2 =
+ let add f1 f2 = if f1 >= 0L && f2 >= 0L then f1 +^ f2 else 0L in
+ { D.rd_req = add bs1.D.rd_req bs2.D.rd_req;
+ rd_bytes = add bs1.D.rd_bytes bs2.D.rd_bytes;
+ wr_req = add bs1.D.wr_req bs2.D.wr_req;
+ wr_bytes = add bs1.D.wr_bytes bs2.D.wr_bytes;
+ errs = add bs1.D.errs bs2.D.errs }
+let sum_block_stats =
+ List.fold_left add_block_stats zero_block_stats
+
+(* Get the difference between two block_stats structures. Missing data
+ * forces the difference to -1.
+ *)
+let diff_block_stats curr prev =
+ let sub f1 f2 = if f1 >= 0L && f2 >= 0L then f1 -^ f2 else -1L in
+ { D.rd_req = sub curr.D.rd_req prev.D.rd_req;
+ rd_bytes = sub curr.D.rd_bytes prev.D.rd_bytes;
+ wr_req = sub curr.D.wr_req prev.D.wr_req;
+ wr_bytes = sub curr.D.wr_bytes prev.D.wr_bytes;
+ errs = sub curr.D.errs prev.D.errs }
+
+(* Sum Domain.interface_stats structures together. Missing fields
+ * get forced to 0. Empty list returns all 0.
+ *)
+let zero_interface_stats =
+ { D.rx_bytes = 0L; rx_packets = 0L; rx_errs = 0L; rx_drop = 0L;
+ tx_bytes = 0L; tx_packets = 0L; tx_errs = 0L; tx_drop = 0L }
+let add_interface_stats is1 is2 =
+ let add f1 f2 = if f1 >= 0L && f2 >= 0L then f1 +^ f2 else 0L in
+ { D.rx_bytes = add is1.D.rx_bytes is2.D.rx_bytes;
+ rx_packets = add is1.D.rx_packets is2.D.rx_packets;
+ rx_errs = add is1.D.rx_errs is2.D.rx_errs;
+ rx_drop = add is1.D.rx_drop is2.D.rx_drop;
+ tx_bytes = add is1.D.tx_bytes is2.D.tx_bytes;
+ tx_packets = add is1.D.tx_packets is2.D.tx_packets;
+ tx_errs = add is1.D.tx_errs is2.D.tx_errs;
+ tx_drop = add is1.D.tx_drop is2.D.tx_drop }
+let sum_interface_stats =
+ List.fold_left add_interface_stats zero_interface_stats
+
+(* Get the difference between two interface_stats structures.
+ * Missing data forces the difference to -1.
+ *)
+let diff_interface_stats curr prev =
+ let sub f1 f2 = if f1 >= 0L && f2 >= 0L then f1 -^ f2 else -1L in
+ { D.rx_bytes = sub curr.D.rx_bytes prev.D.rx_bytes;
+ rx_packets = sub curr.D.rx_packets prev.D.rx_packets;
+ rx_errs = sub curr.D.rx_errs prev.D.rx_errs;
+ rx_drop = sub curr.D.rx_drop prev.D.rx_drop;
+ tx_bytes = sub curr.D.tx_bytes prev.D.tx_bytes;
+ tx_packets = sub curr.D.tx_packets prev.D.tx_packets;
+ tx_errs = sub curr.D.tx_errs prev.D.tx_errs;
+ tx_drop = sub curr.D.tx_drop prev.D.tx_drop }
diff --git a/src/types.mli b/src/types.mli
new file mode 100644
index 0000000..6297482
--- /dev/null
+++ b/src/types.mli
@@ -0,0 +1,49 @@
+(* 'top'-like tool for libvirt domains.
+ (C) Copyright 2007-2017 Richard W.M. Jones, Red Hat Inc.
+ http://libvirt.org/
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*)
+
+(* XXX We should get rid of this type. *)
+type setup =
+ Libvirt.ro Libvirt.Connect.t (* connection *)
+ * bool * bool * bool * bool (* batch, script, csv, stream mode *)
+ * Libvirt.Connect.node_info (* node_info *)
+ * string (* hostname *)
+ * (int * int * int) (* libvirt version *)
+
+(* Sort order. *)
+type sort_order =
+ | DomainID | DomainName | Processor | Memory | Time
+ | NetRX | NetTX | BlockRdRq | BlockWrRq
+
+val all_sort_fields : sort_order list
+val printable_sort_order : sort_order -> string
+val sort_order_of_cli : string -> sort_order
+val cli_of_sort_order : sort_order -> string
+
+(* Current major display mode: TaskDisplay is the normal display. *)
+type display = TaskDisplay | PCPUDisplay | BlockDisplay | NetDisplay
+
+val display_of_cli : string -> display
+val cli_of_display : display -> string
+
+(* Helpers for manipulating block_stats & interface_stats. *)
+val sum_block_stats : Libvirt.Domain.block_stats list -> Libvirt.Domain.block_stats
+val diff_block_stats : Libvirt.Domain.block_stats -> Libvirt.Domain.block_stats -> Libvirt.Domain.block_stats
+
+val sum_interface_stats : Libvirt.Domain.interface_stats list -> Libvirt.Domain.interface_stats
+val diff_interface_stats : Libvirt.Domain.interface_stats -> Libvirt.Domain.interface_stats -> Libvirt.Domain.interface_stats
diff --git a/src/utils.ml b/src/utils.ml
index 3dc637d..5fcc905 100644
--- a/src/utils.ml
+++ b/src/utils.ml
@@ -21,12 +21,6 @@
open Printf
-open Opt_gettext.Gettext
-
-module C = Libvirt.Connect
-module D = Libvirt.Domain
-module N = Libvirt.Network
-
let (//) = Filename.concat
(* Int64 operators for convenience. *)
@@ -166,62 +160,3 @@ module Show = struct
sprintf "%3Ldd%02Ld:%02Ld" days hours mins
)
end
-
-(* Sum Domain.block_stats structures together. Missing fields
- * get forced to 0. Empty list returns all 0.
- *)
-let zero_block_stats =
- { D.rd_req = 0L; rd_bytes = 0L; wr_req = 0L; wr_bytes = 0L; errs = 0L }
-let add_block_stats bs1 bs2 =
- let add f1 f2 = if f1 >= 0L && f2 >= 0L then f1 +^ f2 else 0L in
- { D.rd_req = add bs1.D.rd_req bs2.D.rd_req;
- rd_bytes = add bs1.D.rd_bytes bs2.D.rd_bytes;
- wr_req = add bs1.D.wr_req bs2.D.wr_req;
- wr_bytes = add bs1.D.wr_bytes bs2.D.wr_bytes;
- errs = add bs1.D.errs bs2.D.errs }
-let sum_block_stats =
- List.fold_left add_block_stats zero_block_stats
-
-(* Get the difference between two block_stats structures. Missing data
- * forces the difference to -1.
- *)
-let diff_block_stats curr prev =
- let sub f1 f2 = if f1 >= 0L && f2 >= 0L then f1 -^ f2 else -1L in
- { D.rd_req = sub curr.D.rd_req prev.D.rd_req;
- rd_bytes = sub curr.D.rd_bytes prev.D.rd_bytes;
- wr_req = sub curr.D.wr_req prev.D.wr_req;
- wr_bytes = sub curr.D.wr_bytes prev.D.wr_bytes;
- errs = sub curr.D.errs prev.D.errs }
-
-(* Sum Domain.interface_stats structures together. Missing fields
- * get forced to 0. Empty list returns all 0.
- *)
-let zero_interface_stats =
- { D.rx_bytes = 0L; rx_packets = 0L; rx_errs = 0L; rx_drop = 0L;
- tx_bytes = 0L; tx_packets = 0L; tx_errs = 0L; tx_drop = 0L }
-let add_interface_stats is1 is2 =
- let add f1 f2 = if f1 >= 0L && f2 >= 0L then f1 +^ f2 else 0L in
- { D.rx_bytes = add is1.D.rx_bytes is2.D.rx_bytes;
- rx_packets = add is1.D.rx_packets is2.D.rx_packets;
- rx_errs = add is1.D.rx_errs is2.D.rx_errs;
- rx_drop = add is1.D.rx_drop is2.D.rx_drop;
- tx_bytes = add is1.D.tx_bytes is2.D.tx_bytes;
- tx_packets = add is1.D.tx_packets is2.D.tx_packets;
- tx_errs = add is1.D.tx_errs is2.D.tx_errs;
- tx_drop = add is1.D.tx_drop is2.D.tx_drop }
-let sum_interface_stats =
- List.fold_left add_interface_stats zero_interface_stats
-
-(* Get the difference between two interface_stats structures.
- * Missing data forces the difference to -1.
- *)
-let diff_interface_stats curr prev =
- let sub f1 f2 = if f1 >= 0L && f2 >= 0L then f1 -^ f2 else -1L in
- { D.rx_bytes = sub curr.D.rx_bytes prev.D.rx_bytes;
- rx_packets = sub curr.D.rx_packets prev.D.rx_packets;
- rx_errs = sub curr.D.rx_errs prev.D.rx_errs;
- rx_drop = sub curr.D.rx_drop prev.D.rx_drop;
- tx_bytes = sub curr.D.tx_bytes prev.D.tx_bytes;
- tx_packets = sub curr.D.tx_packets prev.D.tx_packets;
- tx_errs = sub curr.D.tx_errs prev.D.tx_errs;
- tx_drop = sub curr.D.tx_drop prev.D.tx_drop }
diff --git a/src/utils.mli b/src/utils.mli
index 5b71b31..6e81215 100644
--- a/src/utils.mli
+++ b/src/utils.mli
@@ -46,12 +46,3 @@ module Show : sig
val int64 : int64 -> string
val time : int64 -> string
end
-
-(* Helpers for manipulating block_stats & interface_stats. *)
-open Libvirt.Domain
-
-val sum_block_stats : block_stats list -> block_stats
-val diff_block_stats : block_stats -> block_stats -> block_stats
-
-val sum_interface_stats : interface_stats list -> interface_stats
-val diff_interface_stats : interface_stats -> interface_stats -> interface_stats
--
2.19.0.rc0
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