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[Qemu-devel] For 2.0? Re: [PATCH v5 00/10] migration: Optimizate the xbz
From: |
Eric Blake |
Subject: |
[Qemu-devel] For 2.0? Re: [PATCH v5 00/10] migration: Optimizate the xbzrle and fix one corruption issue |
Date: |
Fri, 04 Apr 2014 11:24:49 -0600 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.4.0 |
On 04/04/2014 03:57 AM, address@hidden wrote:
> From: ChenLiang <address@hidden>
>
> V5-->V4
> * Fix two issues: one is cache_insert don't update the page which
> has been in the cache. Another avoiding the risk that run
> xbzrle_encode_buffer on changing data.
Is all or part of this series essential to have in 2.0 to avoid having a
regression?
>
>
> a. Optimization the xbzrle remarkable decrease the cache misses.
> The efficiency of compress increases more than fifty times.
> Before the patch set, the cache almost totally miss when the
> number of cache item less than the dirty page number. Now the
> hot pages in the cache will not be replaced by other pages.
>
> b. Reducing the data copy
>
> c. Fix one corruption issues.
>
> ChenLiang (10):
> XBZRLE: Fix one XBZRLE corruption issues
Based on name, this patch is worth including in the release, if it is
not too late.
> migration: Add counts of updating the dirty bitmap
> migration: expose the bitmap_sync_count to the end user
> migration: expose xbzrle cache miss rate
whereas these names sound like new features, and thus should wait for 2.1.
> XBZRLE: optimize XBZRLE to decrease the cache misses
> XBZRLE: rebuild the cache_is_cached function
> xbzrle: don't check the value in the vm ram repeatedly
> xbzrle: check 8 bytes at a time after an concurrency scene
> migration: optimize xbzrle by reducing data copy
> migration: clear the dead code
>
> arch_init.c | 74 +++++++++++++++++-------------
> docs/xbzrle.txt | 8 ++++
> hmp.c | 4 ++
> include/migration/migration.h | 2 +
> include/migration/page_cache.h | 10 ++--
> migration.c | 3 ++
> page_cache.c | 101
> +++++++++++------------------------------
> qapi-schema.json | 9 +++-
> qmp-commands.hx | 15 ++++--
> xbzrle.c | 48 ++++++++++++++------
> 10 files changed, 144 insertions(+), 130 deletions(-)
>
--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
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- [Qemu-devel] [PATCH v5 01/10] XBZRLE: Fix one XBZRLE corruption issues, (continued)
- [Qemu-devel] [PATCH v5 01/10] XBZRLE: Fix one XBZRLE corruption issues, arei.gonglei, 2014/04/04
- [Qemu-devel] [PATCH v5 04/10] migration: expose xbzrle cache miss rate, arei.gonglei, 2014/04/04
- [Qemu-devel] [PATCH v5 06/10] XBZRLE: rebuild the cache_is_cached function, arei.gonglei, 2014/04/04
- [Qemu-devel] [PATCH v5 07/10] xbzrle: don't check the value in the vm ram repeatedly, arei.gonglei, 2014/04/04
- [Qemu-devel] [PATCH v5 02/10] migration: Add counts of updating the dirty bitmap, arei.gonglei, 2014/04/04
- [Qemu-devel] [PATCH v5 08/10] xbzrle: check 8 bytes at a time after an concurrency scene, arei.gonglei, 2014/04/04
- Re: [Qemu-devel] [PATCH v5 00/10] migration: Optimizate the xbzrle and fix one corruption issue, Dr. David Alan Gilbert, 2014/04/04
- [Qemu-devel] For 2.0? Re: [PATCH v5 00/10] migration: Optimizate the xbzrle and fix one corruption issue,
Eric Blake <=