[PATCH v1 00/23] reduce overhead during live migration

[Olaf Hering <olaf@xxxxxxxxx>]

The current live migration code can easily saturate an 1Gb link.
There is still room for improvement with faster network connections.
Even with this series reviewed and applied.
See description of patch #6.

Olaf

Olaf Hering (23):
  tools: add readv_exact to libxenctrl
  tools: add xc_is_known_page_type to libxenctrl
  tools: use xc_is_known_page_type
  tools: unify type checking for data pfns in migration stream
  tools: show migration transfer rate in send_dirty_pages
  tools/guest: prepare to allocate arrays once
  tools/guest: save: move batch_pfns
  tools/guest: save: move mfns array
  tools/guest: save: move types array
  tools/guest: save: move errors array
  tools/guest: save: move iov array
  tools/guest: save: move rec_pfns array
  tools/guest: save: move guest_data array
  tools/guest: save: move local_pages array
  tools/guest: restore: move pfns array
  tools/guest: restore: move types array
  tools/guest: restore: move mfns array
  tools/guest: restore: move map_errs array
  tools/guest: restore: move mfns array in populate_pfns
  tools/guest: restore: move pfns array in populate_pfns
  tools/guest: restore: split record processing
  tools/guest: restore: split handle_page_data
  tools/guest: restore: write data directly into guest

 tools/libs/ctrl/xc_private.c          |  54 ++-
 tools/libs/ctrl/xc_private.h          |  34 ++
 tools/libs/guest/xg_sr_common.c       |  33 +-
 tools/libs/guest/xg_sr_common.h       |  86 +++-
 tools/libs/guest/xg_sr_restore.c      | 562 +++++++++++++++++---------
 tools/libs/guest/xg_sr_save.c         | 158 ++++----
 tools/libs/guest/xg_sr_save_x86_hvm.c |   5 +-
 tools/libs/guest/xg_sr_save_x86_pv.c  |  31 +-
 8 files changed, 666 insertions(+), 297 deletions(-)