luminous: rbd: parallelize rbd ls -l #16921
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When a cluster contains a large number of images, "rbd ls -l" takes a long time to finish. In my particular case, it took about 58s to process 3000 images. "rbd ls -l" opens each of image and that takes majority of time, so improve this by using aio_open() and aio_close() to do it asynchronously. This reduced total processing time down to around 15 seconds when using default 10 concurrently opened images. Signed-off-by: Piotr Dałek <piotr.dalek@corp.ovh.com> (cherry picked from commit 8f76fc8)
dillaman
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retest this please |
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When a cluster contains a large number of images, "rbd ls -l" takes a
long time to finish. In my particular case, it took about 58s to
process 3000 images.
"rbd ls -l" opens each of image and that takes majority of time, so
improve this by using aio_open() and aio_close() to do it
asynchronously. This reduced total processing time down to around 15
seconds when using default 10 concurrently opened images.
Signed-off-by: Piotr Dałek piotr.dalek@corp.ovh.com
(cherry picked from commit 8f76fc8)