== sanity test 127f: OST IO latency histograms by size === 03:38:19 (1789717099)
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, 0.0972867 s, 421 kB/s
10+0 records in
10+0 records out
40960 bytes (41 kB, 40 KiB) copied, 0.0545706 s, 751 kB/s
Generating I/O with size 64K
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.12969 s, 5.1 MB/s
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.127205 s, 5.2 MB/s
Generating I/O with size 1024K
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.416681 s, 25.2 MB/s
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.325643 s, 32.2 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:  1789717110.274665028
start_time:     1789717102.890575426
elapsed_time:   7.384089602
rd_4K: { 128us: 7, 256us: 3, }
rd_64K: { 128us: 1, 256us: 7, 512us: 1, 1024us: 1, }
rd_1024K: { 512us: 3, 1024us: 6, 2048us: 1, }
wr_4K: { 128us: 4, 256us: 5, 1024us: 1, }
wr_64K: { 128us: 3, 256us: 3, 512us: 3, 1024us: 1, }
wr_1024K: { 512us: 2, 1024us: 5, 2048us: 1, 4096us: 1, 8192us: 1, }
osd-ldiskfs.lustre-OST0000.read_cache_enable=1
osd-ldiskfs.lustre-OST0000.writethrough_cache_enable=1