== sanity test 127f: OST IO latency histograms by size === 06:35:04 (1789554904)
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, 0.2121 s, 193 kB/s
10+0 records in
10+0 records out
40960 bytes (41 kB, 40 KiB) copied, 0.138357 s, 296 kB/s
Generating I/O with size 64K
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.2796 s, 2.3 MB/s
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.168567 s, 3.9 MB/s
Generating I/O with size 1024K
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.821329 s, 12.8 MB/s
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 1.13921 s, 9.2 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:  1789554920.867493105
start_time:     1789554910.554841612
elapsed_time:   10.312651493
rd_4K: { 256us: 5, 512us: 2, 1024us: 3, }
rd_64K: { 256us: 7, 512us: 2, 1024us: 1, }
rd_1024K: { 1024us: 8, 2048us: 2, }
wr_4K: { 256us: 6, 512us: 2, 1024us: 1, 2048us: 1, }
wr_64K: { 256us: 2, 512us: 5, 1024us: 1, 2048us: 2, }
wr_1024K: { 512us: 2, 1024us: 3, 2048us: 3, 4096us: 2, }
osd-ldiskfs.lustre-OST0000.read_cache_enable=1
osd-ldiskfs.lustre-OST0000.writethrough_cache_enable=1