[Qemu-devel] [PATCH v5 00/10] migration: Optimizate the xbzrle and fix one corruption issue

[arei.gonglei]

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.


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
  migration: Add counts of updating the dirty bitmap
  migration: expose the bitmap_sync_count to the end user
  migration: expose xbzrle cache miss rate
  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(-)

-- 
1.7.12.4