== sanity test 127f: OST IO latency histograms by size === 08:37:55 (1787575075)
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, 0.224171 s, 183 kB/s
10+0 records in
10+0 records out
40960 bytes (41 kB, 40 KiB) copied, 0.155854 s, 263 kB/s
Generating I/O with size 64K
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.305965 s, 2.1 MB/s
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.328046 s, 2.0 MB/s
Generating I/O with size 1024K
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.912137 s, 11.5 MB/s
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.904744 s, 11.6 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:  1787575092.196315852
start_time:     1787575081.637303321
elapsed_time:   10.559012531
rd_4K: { 256us: 1, 512us: 3, 1024us: 4, 2048us: 2, }
rd_64K: { 256us: 2, 512us: 4, 1024us: 2, 2048us: 2, }
rd_1024K: { 1024us: 5, 2048us: 2, 4096us: 3, }
wr_4K: { 256us: 1, 512us: 5, 1024us: 2, 2048us: 2, }
wr_64K: { 256us: 2, 512us: 5, 1024us: 2, 4096us: 1, }
wr_1024K: { 512us: 2, 1024us: 2, 2048us: 4, 4096us: 2, }
osd-ldiskfs.lustre-OST0000.read_cache_enable=1
osd-ldiskfs.lustre-OST0000.writethrough_cache_enable=1