From 60e1b84487fead757b5feaf0e55448338f2b2671 Mon Sep 17 00:00:00 2001 From: Laurent Vivier Date: Mon, 28 Sep 2020 11:06:48 -0400 Subject: [PATCH 1/2] migration: increase max-bandwidth to 128 MiB/s (1 Gib/s) RH-Author: Laurent Vivier Message-id: <20200928110648.342290-1-lvivier@redhat.com> Patchwork-id: 98494 O-Subject: [RHEL-AV-8.3.0 qemu-kvm PATCH] migration: increase max-bandwidth to 128 MiB/s (1 Gib/s) Bugzilla: 1874004 RH-Acked-by: Dr. David Alan Gilbert RH-Acked-by: Daniel P. Berrange RH-Acked-by: Greg Kurz max-bandwidth is set by default to 32 MiB/s (256 Mib/s) since 2008 (5bb7910af031c). Most of the CPUs can dirty memory faster than that now, and this is clearly a problem with POWER where the page size is 64 kiB and not 4 KiB. Signed-off-by: Laurent Vivier Message-Id: <20200921144957.979989-1-lvivier@redhat.com> Reviewed-by: David Gibson Reviewed-by: Greg Kurz Reviewed-by: Dr. David Alan Gilbert Signed-off-by: Dr. David Alan Gilbert (cherry picked from commit 7590a2ae091fde8bb72d5df93977ab9707e23242) Signed-off-by: Laurent Vivier BREW: https://brewweb.engineering.redhat.com/brew/taskinfo?taskID=31576368 BZ: https://bugzilla.redhat.com/show_bug.cgi?id=1874004 Upstream: Merged Tested: checked a migration while an installation is running can end before the end of installation Signed-off-by: Danilo C. L. de Paula --- migration/migration.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/migration/migration.c b/migration/migration.c index 7a89ce39a76..8193f33f768 100644 --- a/migration/migration.c +++ b/migration/migration.c @@ -57,7 +57,7 @@ #include "qemu/queue.h" #include "multifd.h" -#define MAX_THROTTLE (32 << 20) /* Migration transfer speed throttling */ +#define MAX_THROTTLE (128 << 20) /* Migration transfer speed throttling */ /* Amount of time to allocate to each "chunk" of bandwidth-throttled * data. */ -- 2.27.0