== sanity test 127f: OST IO latency histograms by size === 21:26:02 (1787793962)
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, 0.241682 s, 169 kB/s
10+0 records in
10+0 records out
40960 bytes (41 kB, 40 KiB) copied, 0.136622 s, 300 kB/s
Generating I/O with size 64K
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.45959 s, 1.4 MB/s
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.232646 s, 2.8 MB/s
Generating I/O with size 1024K
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.926937 s, 11.3 MB/s
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.647703 s, 16.2 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:  1787793979.322300069
start_time:     1787793969.046451927
elapsed_time:   10.275848142
rd_4K: { 256us: 2, 512us: 5, 1024us: 3, }
rd_64K: { 256us: 3, 512us: 4, 1024us: 1, 2048us: 2, }
rd_1024K: { 1024us: 6, 2048us: 3, 4096us: 1, }
wr_4K: { 256us: 1, 512us: 7, 1024us: 1, 4096us: 1, }
wr_64K: { 512us: 1, 1024us: 3, 2048us: 2, 4096us: 4, }
wr_1024K: { 2048us: 4, 4096us: 4, 8192us: 2, }
osd-ldiskfs.lustre-OST0000.read_cache_enable=1
osd-ldiskfs.lustre-OST0000.writethrough_cache_enable=1