== sanity test 127f: OST IO latency histograms by size === 05:56:39 (1787392599)
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, 0.195962 s, 209 kB/s
10+0 records in
10+0 records out
40960 bytes (41 kB, 40 KiB) copied, 0.0986165 s, 415 kB/s
Generating I/O with size 64K
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.252421 s, 2.6 MB/s
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.238699 s, 2.7 MB/s
Generating I/O with size 1024K
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.941778 s, 11.1 MB/s
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.628161 s, 16.7 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:  1787392616.052272366
start_time:     1787392606.158572451
elapsed_time:   9.893699915
rd_4K: { 128us: 1, 256us: 4, 512us: 5, }
rd_64K: { 256us: 4, 512us: 3, 1024us: 2, 2048us: 1, }
rd_1024K: { 512us: 1, 1024us: 9, }
wr_4K: { 256us: 3, 512us: 5, 1024us: 2, }
wr_64K: { 256us: 2, 512us: 3, 1024us: 5, }
wr_1024K: { 512us: 1, 1024us: 4, 2048us: 4, 4096us: 1, }
osd-ldiskfs.lustre-OST0000.read_cache_enable=1
osd-ldiskfs.lustre-OST0000.writethrough_cache_enable=1