== sanity test 127f: OST IO latency histograms by size === 02:09:03 (1788847743)
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, 0.21335 s, 192 kB/s
10+0 records in
10+0 records out
40960 bytes (41 kB, 40 KiB) copied, 0.084118 s, 487 kB/s
Generating I/O with size 64K
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.321207 s, 2.0 MB/s
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.303845 s, 2.2 MB/s
Generating I/O with size 1024K
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 1.49655 s, 7.0 MB/s
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.575214 s, 18.2 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:  1788847760.355107990
start_time:     1788847749.655800803
elapsed_time:   10.699307187
rd_4K: { 128us: 1, 256us: 7, 512us: 2, }
rd_64K: { 256us: 3, 512us: 5, 1024us: 1, 2048us: 1, }
rd_1024K: { 512us: 1, 1024us: 4, 2048us: 5, }
wr_4K: { 256us: 6, 512us: 1, 1024us: 3, }
wr_64K: { 512us: 5, 2048us: 2, 4096us: 2, 8192us: 1, }
wr_1024K: { 512us: 2, 1024us: 2, 2048us: 3, 4096us: 3, }
osd-ldiskfs.lustre-OST0000.read_cache_enable=1
osd-ldiskfs.lustre-OST0000.writethrough_cache_enable=1