[Qemu-devel] [PATCHv2 0/9] buffer_is_zero / migration optimizations

[Peter Lieven]

this is v2 of my patch series with various optimizations in
zero buffer checking and migration tweaks.

hopefully properly threaded this time.

thanks especially to Eric Blake and Paolo Bonzini for their comments.

the patches can also be fetched from:
git://github.com/plieven/qemu.git [branch migration_optimizations_v2]

v2:
 - fix description, add trivial zero check and add asserts 
   to buffer_find_nonzero_offset.
 - add a constant for the unroll factor of buffer_find_nonzero_offset
 - replace is_dup_page() by buffer_is_zero()
 - added test results to xbzrle patch
 - optimize descriptions

Have a nice weekend,
Peter

Peter Lieven (9):
  move vector definitions to qemu-common.h
  cutils: add a function to find non-zero content in a buffer
  buffer_is_zero: use vector optimizations if possible
  bitops: use vector algorithm to optimize find_next_bit()
  migration: search for zero instead of dup pages
  migration: add an indicator for bulk state of ram migration
  migration: do not sent zero pages in bulk stage
  migration: do not search dirty pages in bulk stage
  migration: use XBZRLE only after bulk stage

 arch_init.c           |   62 +++++++++++++++----------------------------------
 include/qemu-common.h |   26 +++++++++++++++++++++
 util/bitops.c         |   26 ++++++++++++++++++---
 util/cutils.c         |   47 +++++++++++++++++++++++++++++++++++++
 4 files changed, 115 insertions(+), 46 deletions(-)

-- 
1.7.9.5