On 2022-07-27 23:59, Chaitanya Kulkarni wrote: >> Sequential Write: >> >> x-----------------x---------------------------------x---------------------------------x >> | IOdepth | 8 | 16 | >> x-----------------x---------------------------------x---------------------------------x >> | | KIOPS |BW(MiB/s) | Lat(usec) | KIOPS |BW(MiB/s) | Lat(usec) | >> x-----------------x---------------------------------x---------------------------------x >> | Without patch | 578 | 2257 | 12.80 | 576 | 2248 | 25.78 | >> x-----------------x---------------------------------x---------------------------------x >> | With patch | 581 | 2268 | 12.74 | 576 | 2248 | 25.85 | >> x-----------------x---------------------------------x---------------------------------x >> >> Sequential read: >> >> x-----------------x---------------------------------x---------------------------------x >> | IOdepth | 8 | 16 | >> x-----------------x---------------------------------x---------------------------------x >> | | KIOPS |BW(MiB/s) | Lat(usec) | KIOPS |BW(MiB/s) | Lat(usec) | >> x-----------------x---------------------------------x---------------------------------x >> | Without patch | 667 | 2605 | 11.79 | 675 | 2637 | 23.49 | >> x-----------------x---------------------------------x---------------------------------x >> | With patch | 667 | 2605 | 11.79 | 675 | 2638 | 23.48 | >> x-----------------x---------------------------------x---------------------------------x >> >> Random read: >> >> x-----------------x---------------------------------x---------------------------------x >> | IOdepth | 8 | 16 | >> x-----------------x---------------------------------x---------------------------------x >> | | KIOPS |BW(MiB/s) | Lat(usec) | KIOPS |BW(MiB/s) | Lat(usec) | >> x-----------------x---------------------------------x---------------------------------x >> | Without patch | 522 | 2038 | 15.05 | 514 | 2006 | 30.87 | >> x-----------------x---------------------------------x---------------------------------x >> | With patch | 522 | 2039 | 15.04 | 523 | 2042 | 30.33 | >> x-----------------x---------------------------------x---------------------------------x >> >> Minor variations are noticed in Sequential write with io depth 8 and >> in random read with io depth 16. But overall no noticeable differences >> were noticed > > minor variations in with aspect of the performance ? > are these documented somewhere ? > The table above documents those minor variations in performance. > move the large table of performance numbers to the cover letter it looks > ugly in the git log... > I could do that. > -- dm-devel mailing list dm-devel@xxxxxxxxxx https://listman.redhat.com/mailman/listinfo/dm-devel
