== sanity test 127f: OST IO latency histograms by size === 07:51:01 (1788522661)
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, 0.275432 s, 149 kB/s
10+0 records in
10+0 records out
40960 bytes (41 kB, 40 KiB) copied, 0.12424 s, 330 kB/s
Generating I/O with size 64K
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.53456 s, 1.2 MB/s
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.422439 s, 1.6 MB/s
Generating I/O with size 1024K
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 1.53094 s, 6.8 MB/s
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.948797 s, 11.1 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:  1788522683.969846535
start_time:     1788522670.529970882
elapsed_time:   13.439875653
rd_4K: { 256us: 5, 512us: 5, }
rd_64K: { 256us: 3, 512us: 4, 1024us: 3, }
rd_1024K: { 1024us: 5, 2048us: 4, 4096us: 1, }
wr_4K: { 256us: 2, 512us: 3, 1024us: 3, 2048us: 2, }
wr_64K: { 256us: 2, 512us: 2, 1024us: 4, 2048us: 1, 4096us: 1, }
wr_1024K: { 1024us: 3, 2048us: 2, 4096us: 5, }
osd-ldiskfs.lustre-OST0000.read_cache_enable=1
osd-ldiskfs.lustre-OST0000.writethrough_cache_enable=1