== sanity test 127f: OST IO latency histograms by size === 22:18:12 (1787451492)
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, 0.283215 s, 145 kB/s
10+0 records in
10+0 records out
40960 bytes (41 kB, 40 KiB) copied, 0.19646 s, 208 kB/s
Generating I/O with size 64K
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.389424 s, 1.7 MB/s
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.289795 s, 2.3 MB/s
Generating I/O with size 1024K
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.648261 s, 16.2 MB/s
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.95904 s, 10.9 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:  1787451509.609962170
start_time:     1787451498.917598317
elapsed_time:   10.692363853
rd_4K: { 256us: 5, 1024us: 3, 2048us: 2, }
rd_64K: { 256us: 7, 512us: 1, 1024us: 2, }
rd_1024K: { 1024us: 8, 2048us: 2, }
wr_4K: { 256us: 2, 1024us: 3, 2048us: 4, 4096us: 1, }
wr_64K: { 256us: 2, 512us: 4, 1024us: 2, 2048us: 2, }
wr_1024K: { 512us: 1, 1024us: 7, 2048us: 2, }
osd-ldiskfs.lustre-OST0000.read_cache_enable=1
osd-ldiskfs.lustre-OST0000.writethrough_cache_enable=1