Re: [Qemu-devel] [PULL 11/15] migration: Add interface to control compression

[Eric Blake <eblake@redhat.com>]

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On 05/06/2015 11:50 AM, Juan Quintela wrote:
> From: Liang Li <liang.z.li@intel.com>
> 
> The multiple compression threads can be turned on/off through
> qmp and hmp interface before doing live migration.
> 
> Signed-off-by: Liang Li <liang.z.li@intel.com>
> Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>
> Reviewed-by: Dr.David Alan Gilbert <dgilbert@redhat.com>
> Reviewed-by: Eric Blake <eblake@redhat.com>
> Signed-off-by: Juan Quintela <quintela@redhat.com>
> ---
>  migration/migration.c |  7 +++++--
>  qapi-schema.json      | 11 ++++++++++-
>  2 files changed, 15 insertions(+), 3 deletions(-)

> +++ b/qapi-schema.json
> @@ -515,13 +515,22 @@
>  #          to enable the capability on the source VM. The feature is disabled by
>  #          default. (since 1.6)
>  #
> +# @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)

s/2.3/2.4/

(okay as a follow-up patch, along with touchups for the rest of the series)

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org


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