84 lines
2.9 KiB
Diff
84 lines
2.9 KiB
Diff
diff --git a/profiles/latency-performance/tuned.conf b/profiles/latency-performance/tuned.conf
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index d200b5c..877229f 100644
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--- a/profiles/latency-performance/tuned.conf
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+++ b/profiles/latency-performance/tuned.conf
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@@ -32,3 +32,16 @@ vm.dirty_background_ratio=3
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# 100 tells the kernel to aggressively swap processes out of physical memory
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# and move them to swap cache
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vm.swappiness=10
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+
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+[scheduler]
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+# ktune sysctl settings for rhel6 servers, maximizing i/o throughput
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+#
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+# Minimal preemption granularity for CPU-bound tasks:
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+# (default: 1 msec# (1 + ilog(ncpus)), units: nanoseconds)
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+sched_min_granularity_ns = 3000000
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+sched_wakeup_granularity_ns = 4000000
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+
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+# The total time the scheduler will consider a migrated process
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+# "cache hot" and thus less likely to be re-migrated
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+# (system default is 500000, i.e. 0.5 ms)
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+sched_migration_cost_ns = 5000000
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diff --git a/profiles/sap-hana/tuned.conf b/profiles/sap-hana/tuned.conf
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index aeecf53..8dcee57 100644
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--- a/profiles/sap-hana/tuned.conf
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+++ b/profiles/sap-hana/tuned.conf
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@@ -20,3 +20,7 @@ kernel.numa_balancing = 0
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vm.dirty_ratio = 40
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vm.dirty_background_ratio = 10
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vm.swappiness = 10
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+
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+[scheduler]
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+sched_min_granularity_ns = 3000000
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+sched_wakeup_granularity_ns = 4000000
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diff --git a/profiles/throughput-performance/tuned.conf b/profiles/throughput-performance/tuned.conf
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index 62a7322..7c55fb2 100644
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--- a/profiles/throughput-performance/tuned.conf
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+++ b/profiles/throughput-performance/tuned.conf
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@@ -63,9 +63,31 @@ vm.swappiness=10
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# on older kernels
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net.core.somaxconn=>2048
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+[scheduler]
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+# ktune sysctl settings for rhel6 servers, maximizing i/o throughput
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+#
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+# Minimal preemption granularity for CPU-bound tasks:
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+# (default: 1 msec# (1 + ilog(ncpus)), units: nanoseconds)
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+sched_min_granularity_ns = 10000000
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+
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+# SCHED_OTHER wake-up granularity.
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+# (default: 1 msec# (1 + ilog(ncpus)), units: nanoseconds)
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+#
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+# This option delays the preemption effects of decoupled workloads
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+# and reduces their over-scheduling. Synchronous workloads will still
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+# have immediate wakeup/sleep latencies.
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+sched_wakeup_granularity_ns = 15000000
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+
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# Marvell ThunderX
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[sysctl.thunderx]
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type=sysctl
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uname_regex=aarch64
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cpuinfo_regex=${thunderx_cpuinfo_regex}
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kernel.numa_balancing=0
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+
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+# AMD
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+[scheduler.amd]
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+type=scheduler
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+uname_regex=x86_64
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+cpuinfo_regex=${amd_cpuinfo_regex}
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+sched_migration_cost_ns=5000000
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diff --git a/profiles/virtual-host/tuned.conf b/profiles/virtual-host/tuned.conf
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index 5301d9f..74a5fb0 100644
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--- a/profiles/virtual-host/tuned.conf
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+++ b/profiles/virtual-host/tuned.conf
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@@ -14,3 +14,9 @@ vm.dirty_background_ratio = 5
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[cpu]
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# Setting C3 state sleep mode/power savings
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force_latency=cstate.id_no_zero:3|70
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+
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+[scheduler]
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+# The total time the scheduler will consider a migrated process
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+# "cache hot" and thus less likely to be re-migrated
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+# (system default is 500000, i.e. 0.5 ms)
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+sched_migration_cost_ns = 5000000
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