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Re: [Qemu-devel] [v7 11/14] migration: Add interface to control compress
From: |
Eric Blake |
Subject: |
Re: [Qemu-devel] [v7 11/14] migration: Add interface to control compression |
Date: |
Tue, 14 Apr 2015 06:00:38 -0600 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.6.0 |
On 04/08/2015 12:20 AM, Liang Li wrote:
> The multiple compression threads can be turned on/off through
> qmp and hmp interface before doing live migration.
>
> Signed-off-by: Liang Li <address@hidden>
> Signed-off-by: Yang Zhang <address@hidden>
> Reviewed-by: Dr.David Alan Gilbert <address@hidden>
> Reviewed-by: Eric Blake <address@hidden>
> ---
> migration/migration.c | 7 +++++--
> qapi-schema.json | 11 ++++++++++-
> 2 files changed, 15 insertions(+), 3 deletions(-)
>
> +# @compress: Use multiple compression threads to accelerate live migration.
> +# This feature can help to reduce the migration traffic, by sending
> +# compressed pages. Please note that if compress and xbzrle are both
> +# on, compress only takes effect in the ram bulk stage, after that,
> +# it will be disabled and only xbzrle takes effect, this can help to
> +# minimize migration traffic. The feature is disabled by default.
> +# (since 2.3)
Maintainer can tweak this to 2.4, since we've missed 2.3. My R-b still
stands.
--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
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[Qemu-devel] [v7 13/14] migration: Add qmp commands to set and query parameters, Liang Li, 2015/04/08