== sanity test 127f: OST IO latency histograms by size === 20:17:12 (1781223432)
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, 0.41117 s, 99.6 kB/s
10+0 records in
10+0 records out
40960 bytes (41 kB, 40 KiB) copied, 0.195824 s, 209 kB/s
Generating I/O with size 64K
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.42346 s, 1.5 MB/s
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.476968 s, 1.4 MB/s
Generating I/O with size 1024K
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 1.31842 s, 8.0 MB/s
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.863347 s, 12.1 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:  1781223456.182536704
start_time:     1781223442.515540540
elapsed_time:   13.666996164
rd_4K: { 256us: 1, 512us: 6, 1024us: 1, 2048us: 1, 4096us: 1, }
rd_64K: { 256us: 2, 512us: 5, 1024us: 2, 2048us: 1, }
rd_1024K: { 1024us: 5, 2048us: 4, 8192us: 1, }
wr_4K: { 256us: 1, 512us: 3, 1024us: 3, 2048us: 1, 4096us: 2, }
wr_64K: { 256us: 2, 512us: 4, 1024us: 4, }
wr_1024K: { 1024us: 3, 2048us: 5, 4096us: 1, 8192us: 1, }
osd-ldiskfs.lustre-OST0000.read_cache_enable=1
osd-ldiskfs.lustre-OST0000.writethrough_cache_enable=1