[v3] block-copy: use aio-task-pool

[PATCH v3 0/5] block-copy: use aio-task-pool

Vladimir Sementsov-Ogievskiy posted 5 patches 4 years ago

Diff against v2 v4
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Maintainers: Kevin Wolf <kwolf@redhat.com>, Max Reitz <mreitz@redhat.com>

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block/block-copy.c | 262 ++++++++++++++++++++++++++++++---------------
1 file changed, 177 insertions(+), 85 deletions(-)

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[PATCH v3 0/5] block-copy: use aio-task-pool

Posted by Vladimir Sementsov-Ogievskiy 4 years ago

Hi all!

v3:
01: drop extra line "+    s->in_flight_bytes -= task->bytes - new_bytes;"
02: add Max's r-b
03: rebased on 01 fix (dropped line not updated now). keep Max's r-b
04: more refactoring:
     don't require offset argument of block_copy_task_create being dirty,
     use !bdrv_dirty_bitmap_next_dirty_area() in block_copy_task_create()
05: declare block_copy_task_entry (as moving patch dropped)
    rebased on 04 changes

==

This is the next step of improving block-copy: use aio task pool.

Async copying loop has better performance than linear, which is shown
in original series (was
"[RFC 00/24] backup performance: block_status + async".

Vladimir Sementsov-Ogievskiy (5):
  block/block-copy: rename in-flight requests to tasks
  block/block-copy: alloc task on each iteration
  block/block-copy: add state pointer to BlockCopyTask
  block/block-copy: refactor task creation
  block/block-copy: use aio-task-pool API

 block/block-copy.c | 262 ++++++++++++++++++++++++++++++---------------
 1 file changed, 177 insertions(+), 85 deletions(-)

-- 
2.21.0