== sanity test 127f: OST IO latency histograms by size === 01:03:16 (1788930196)
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, 0.301039 s, 136 kB/s
10+0 records in
10+0 records out
40960 bytes (41 kB, 40 KiB) copied, 0.209968 s, 195 kB/s
Generating I/O with size 64K
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.287873 s, 2.3 MB/s
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.400614 s, 1.6 MB/s
Generating I/O with size 1024K
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 1.29971 s, 8.1 MB/s
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.825327 s, 12.7 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:  1788930214.630128874
start_time:     1788930203.448256059
elapsed_time:   11.181872815
rd_4K: { 512us: 2, 1024us: 4, 2048us: 3, 4096us: 1, }
rd_64K: { 256us: 1, 512us: 2, 1024us: 5, 2048us: 2, }
rd_1024K: { 512us: 1, 1024us: 7, 2048us: 1, 4096us: 1, }
wr_4K: { 512us: 7, 1024us: 2, 2048us: 1, }
wr_64K: { 256us: 1, 512us: 2, 1024us: 4, 2048us: 2, 4096us: 1, }
wr_1024K: { 512us: 1, 1024us: 5, 2048us: 2, 4096us: 2, }
osd-ldiskfs.lustre-OST0000.read_cache_enable=1
osd-ldiskfs.lustre-OST0000.writethrough_cache_enable=1