== sanity test 127f: OST IO latency histograms by size === 18:48:01 (1777589281)
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, 0.151112 s, 271 kB/s
10+0 records in
10+0 records out
40960 bytes (41 kB, 40 KiB) copied, 0.086518 s, 473 kB/s
Generating I/O with size 64K
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.218325 s, 3.0 MB/s
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.129333 s, 5.1 MB/s
Generating I/O with size 1024K
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.528447 s, 19.8 MB/s
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.32331 s, 32.4 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:  1777589292.896322292
start_time:     1777589285.050136311
elapsed_time:   7.846185981
rd_4K: { 256us: 6, 512us: 4, }
rd_64K: { 128us: 1, 256us: 4, 512us: 3, 1024us: 2, }
rd_1024K: { 512us: 8, 1024us: 2, }
wr_4K: { 256us: 5, 512us: 2, 1024us: 3, }
wr_64K: { 256us: 4, 512us: 5, 1024us: 1, }
wr_1024K: { 512us: 2, 1024us: 5, 2048us: 2, 4096us: 1, }
osd-ldiskfs.lustre-OST0000.read_cache_enable=1
osd-ldiskfs.lustre-OST0000.writethrough_cache_enable=1