== sanity test 127f: OST IO latency histograms by size === 15:58:28 (1780343908)
osd-ldiskfs.lustre-OST0000.read_cache_enable=0
osd-ldiskfs.lustre-OST0000.writethrough_cache_enable=0
osd-ldiskfs.lustre-OST0000.io_latency_stats=clear
osd-ldiskfs.lustre-OST0000.stats=clear
osd-ldiskfs.lustre-OST0001.stats=clear
Generating I/O with size 4K
10+0 records in
10+0 records out
40960 bytes (41 kB, 40 KiB) copied, 0.217591 s, 188 kB/s
10+0 records in
10+0 records out
40960 bytes (41 kB, 40 KiB) copied, 0.12649 s, 324 kB/s
Generating I/O with size 64K
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.240346 s, 2.7 MB/s
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.182342 s, 3.6 MB/s
Generating I/O with size 1024K
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.742373 s, 14.1 MB/s
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.486571 s, 21.6 MB/s
osd-*.lustre-OST0000.io_latency_stats stats after I/O:
osd-ldiskfs.lustre-OST0000.io_latency_stats=
io_latency_by_size:
snapshot_time:  1780343923.208584400
start_time:     1780343914.223663629
elapsed_time:   8.984920771
rd_4K: { 256us: 6, 512us: 1, 1024us: 3, }
rd_64K: { 256us: 1, 512us: 5, 1024us: 3, 2048us: 1, }
rd_1024K: { 1024us: 5, 2048us: 3, 4096us: 2, }
wr_4K: { 256us: 2, 512us: 4, 1024us: 3, 2048us: 1, }
wr_64K: { 512us: 5, 1024us: 4, 2048us: 1, }
wr_1024K: { 1024us: 3, 2048us: 7, }
osd-ldiskfs.lustre-OST0000.read_cache_enable=1
osd-ldiskfs.lustre-OST0000.writethrough_cache_enable=1