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migration: increase max-bandwidth to 128 MiB/s (1 Gib/s) 

max-bandwidth is set by default to 32 MiB/s (256 Mib/s)
since 2008 (5bb7910af0).

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 <lvivier@redhat.com>
Message-Id: <20200921144957.979989-1-lvivier@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
This commit is contained in:
Laurent Vivier 2020-09-21 16:49:57 +02:00 committed by Dr. David Alan Gilbert
parent b4deb9bf8d
commit 7590a2ae09
1 changed files with 1 additions and 1 deletions
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2
migration/migration.c
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@ -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. */