== sanity test 127f: OST IO latency histograms by size === 20:20:34 (1787444434)
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, 0.235183 s, 174 kB/s
10+0 records in
10+0 records out
40960 bytes (41 kB, 40 KiB) copied, 0.106803 s, 384 kB/s
Generating I/O with size 64K
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.170506 s, 3.8 MB/s
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.160781 s, 4.1 MB/s
Generating I/O with size 1024K
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 1.09296 s, 9.6 MB/s
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.674 s, 15.6 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:  1787444450.986304875
start_time:     1787444440.880437680
elapsed_time:   10.105867195
rd_4K: { 128us: 1, 256us: 7, 512us: 1, 2048us: 1, }
rd_64K: { 256us: 6, 512us: 4, }
rd_1024K: { 512us: 1, 1024us: 7, 4096us: 2, }
wr_4K: { 256us: 4, 512us: 4, 1024us: 2, }
wr_64K: { 256us: 5, 512us: 5, }
wr_1024K: { 512us: 1, 1024us: 7, 4096us: 2, }
osd-ldiskfs.lustre-OST0000.read_cache_enable=1
osd-ldiskfs.lustre-OST0000.writethrough_cache_enable=1