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Merge pull request #15206 from ifed01/wip-fix-rbd-bench

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rbd/bench: fix write gaps when doing sequential writes with io-threads > 1

Reviewed-by: Jason Dillaman <dillaman@redhat.com>
This commit is contained in:
Mykola Golub 2017-05-24 09:57:02 +03:00 committed by GitHub
commit 1d74182a29
1 changed files with 3 additions and 4 deletions
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7
src/tools/rbd/action/Bench.cc
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@ -254,6 +254,9 @@ int do_bench(librbd::Image& image, io_type_t io_type,
b.wait_for(io_threads - 1);
i = 0;
while (i < io_threads && off < io_bytes) {
if (!b.start_io(io_threads, thread_offset[i], io_size, op_flags)) {
break;
}
if (random) {
thread_offset[i] = (rand() % (size / io_size)) * io_size;
} else {
@ -261,10 +264,6 @@ int do_bench(librbd::Image& image, io_type_t io_type,
if (thread_offset[i] + io_size > size)
thread_offset[i] = 0;
}
if (!b.start_io(io_threads, thread_offset[i], io_size, op_flags))
break;
++i;
++ios;
off += io_size;