== sanity test 127f: OST IO latency histograms by size === 05:55:19 (1788774919)
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, 0.193059 s, 212 kB/s
10+0 records in
10+0 records out
40960 bytes (41 kB, 40 KiB) copied, 0.090434 s, 453 kB/s
Generating I/O with size 64K
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.392734 s, 1.7 MB/s
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.202608 s, 3.2 MB/s
Generating I/O with size 1024K
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.977478 s, 10.7 MB/s
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.849654 s, 12.3 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:  1788774938.580242700
start_time:     1788774927.714806340
elapsed_time:   10.865436360
rd_4K: { 256us: 4, 512us: 4, 1024us: 2, }
rd_64K: { 256us: 3, 512us: 6, 1024us: 1, }
rd_1024K: { 512us: 1, 1024us: 4, 2048us: 4, 4096us: 1, }
wr_4K: { 128us: 1, 256us: 1, 512us: 5, 1024us: 3, }
wr_64K: { 512us: 4, 1024us: 3, 2048us: 3, }
wr_1024K: { 1024us: 7, 2048us: 2, 4096us: 1, }
osd-ldiskfs.lustre-OST0000.read_cache_enable=1
osd-ldiskfs.lustre-OST0000.writethrough_cache_enable=1