== sanity test 127f: OST IO latency histograms by size === 18:58:19 (1788649099)
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, 0.332997 s, 123 kB/s
10+0 records in
10+0 records out
40960 bytes (41 kB, 40 KiB) copied, 0.157687 s, 260 kB/s
Generating I/O with size 64K
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.339624 s, 1.9 MB/s
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.474931 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, 0.95365 s, 11.0 MB/s
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.688854 s, 15.2 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:  1788649117.862510650
start_time:     1788649107.021293794
elapsed_time:   10.841216856
rd_4K: { 128us: 1, 256us: 5, 512us: 2, 1024us: 1, 4096us: 1, }
rd_64K: { 256us: 1, 512us: 3, 1024us: 3, 2048us: 1, 4096us: 2, }
rd_1024K: { 512us: 4, 1024us: 4, 2048us: 1, 4096us: 1, }
wr_4K: { 128us: 1, 512us: 2, 1024us: 3, 2048us: 4, }
wr_64K: { 512us: 2, 1024us: 5, 2048us: 2, 4096us: 1, }
wr_1024K: { 512us: 4, 1024us: 4, 2048us: 1, 8192us: 1, }
osd-ldiskfs.lustre-OST0000.read_cache_enable=1
osd-ldiskfs.lustre-OST0000.writethrough_cache_enable=1