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Re: [Qemu-devel] [PULL 01/16] migration: introduce postcopy-blocktime ca
From: |
Eric Blake |
Subject: |
Re: [Qemu-devel] [PULL 01/16] migration: introduce postcopy-blocktime capability |
Date: |
Wed, 25 Apr 2018 15:34:33 -0500 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.7.0 |
On 04/25/2018 03:03 PM, Dr. David Alan Gilbert (git) wrote:
> From: Alexey Perevalov <address@hidden>
>
> Right now it could be used on destination side to
> enable vCPU blocktime calculation for postcopy live migration.
> vCPU blocktime - it's time since vCPU thread was put into
> interruptible sleep, till memory page was copied and thread awake.
>
> Reviewed-by: Dr. David Alan Gilbert <address@hidden>
> Signed-off-by: Alexey Perevalov <address@hidden>
> Reviewed-by: Juan Quintela <address@hidden>
> Signed-off-by: Juan Quintela <address@hidden>
> Message-Id: <address@hidden>
> Signed-off-by: Dr. David Alan Gilbert <address@hidden>
> ---
> +++ b/qapi/migration.json
> @@ -354,16 +354,20 @@
> #
> # @x-multifd: Use more than one fd for migration (since 2.11)
> #
> +#
> # @dirty-bitmaps: If enabled, QEMU will migrate named dirty bitmaps.
Why is the extra blank line added here? Doesn't hold up the pull
request, but might be worth a trivial followup patch.
> # (since 2.12)
> #
> +# @postcopy-blocktime: Calculate downtime for postcopy live migration
> +# (since 2.13)
> +#
> # Since: 1.2
> ##
> { 'enum': 'MigrationCapability',
> 'data': ['xbzrle', 'rdma-pin-all', 'auto-converge', 'zero-blocks',
> 'compress', 'events', 'postcopy-ram', 'x-colo', 'release-ram',
> 'block', 'return-path', 'pause-before-switchover', 'x-multifd',
> - 'dirty-bitmaps' ] }
> + 'dirty-bitmaps', 'postcopy-blocktime' ] }
>
> ##
> # @MigrationCapabilityStatus:
>
--
Eric Blake, Principal Software Engineer
Red Hat, Inc. +1-919-301-3266
Virtualization: qemu.org | libvirt.org
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- [Qemu-devel] [PULL 00/16] migration queue, Dr. David Alan Gilbert (git), 2018/04/25
- [Qemu-devel] [PULL 04/16] migration: postcopy_blocktime documentation, Dr. David Alan Gilbert (git), 2018/04/25
- [Qemu-devel] [PULL 01/16] migration: introduce postcopy-blocktime capability, Dr. David Alan Gilbert (git), 2018/04/25
- Re: [Qemu-devel] [PULL 01/16] migration: introduce postcopy-blocktime capability,
Eric Blake <=
- [Qemu-devel] [PULL 02/16] migration: add postcopy blocktime ctx into MigrationIncomingState, Dr. David Alan Gilbert (git), 2018/04/25
- [Qemu-devel] [PULL 05/16] migration: add blocktime calculation into migration-test, Dr. David Alan Gilbert (git), 2018/04/25
- [Qemu-devel] [PULL 08/16] migration: stop compression to allocate and free memory frequently, Dr. David Alan Gilbert (git), 2018/04/25
- [Qemu-devel] [PULL 07/16] migration: stop compressing page in migration thread, Dr. David Alan Gilbert (git), 2018/04/25
- [Qemu-devel] [PULL 09/16] migration: stop decompression to allocate and free memory frequently, Dr. David Alan Gilbert (git), 2018/04/25
- [Qemu-devel] [PULL 06/16] migration: add postcopy total blocktime into query-migrate, Dr. David Alan Gilbert (git), 2018/04/25
- [Qemu-devel] [PULL 15/16] migration: introduce save_normal_page(), Dr. David Alan Gilbert (git), 2018/04/25