== sanity test 127f: OST IO latency histograms by size === 18:50:43 (1786575043)
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, 0.16774 s, 244 kB/s
10+0 records in
10+0 records out
40960 bytes (41 kB, 40 KiB) copied, 0.0906456 s, 452 kB/s
Generating I/O with size 64K
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.204804 s, 3.2 MB/s
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.139675 s, 4.7 MB/s
Generating I/O with size 1024K
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.511125 s, 20.5 MB/s
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.340584 s, 30.8 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:  1786575056.762396881
start_time:     1786575048.915830319
elapsed_time:   7.846566562
rd_4K: { 128us: 1, 256us: 3, 512us: 4, 1024us: 2, }
rd_64K: { 256us: 7, 512us: 3, }
rd_1024K: { 512us: 4, 1024us: 5, 2048us: 1, }
wr_4K: { 256us: 5, 512us: 4, 2048us: 1, }
wr_64K: { 256us: 5, 512us: 3, 1024us: 2, }
wr_1024K: { 512us: 2, 1024us: 7, 4096us: 1, }
osd-ldiskfs.lustre-OST0000.read_cache_enable=1
osd-ldiskfs.lustre-OST0000.writethrough_cache_enable=1