== sanity test 127f: OST IO latency histograms by size === 02:20:37 (1783146037)
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, 0.0507214 s, 808 kB/s
10+0 records in
10+0 records out
40960 bytes (41 kB, 40 KiB) copied, 0.0332248 s, 1.2 MB/s
Generating I/O with size 64K
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.0767145 s, 8.5 MB/s
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.0530026 s, 12.4 MB/s
Generating I/O with size 1024K
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.312745 s, 33.5 MB/s
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.183706 s, 57.1 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:  1783146047.828102657
start_time:     1783146041.282926958
elapsed_time:   6.545175699
rd_4K: { 64us: 4, 128us: 6, }
rd_64K: { 128us: 9, 256us: 1, }
rd_1024K: { 512us: 10, }
wr_4K: { 64us: 2, 128us: 7, 256us: 1, }
wr_64K: { 128us: 9, 256us: 1, }
wr_1024K: { 512us: 10, }
osd-ldiskfs.lustre-OST0000.read_cache_enable=1
osd-ldiskfs.lustre-OST0000.writethrough_cache_enable=1