== sanity test 127f: OST IO latency histograms by size === 06:11:14 (1785406274)
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, 0.30404 s, 135 kB/s
10+0 records in
10+0 records out
40960 bytes (41 kB, 40 KiB) copied, 0.256661 s, 160 kB/s
Generating I/O with size 64K
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.327424 s, 2.0 MB/s
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.313536 s, 2.1 MB/s
Generating I/O with size 1024K
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 1.38706 s, 7.6 MB/s
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 1.3527 s, 7.8 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:  1785406301.395632776
start_time:     1785406287.402357451
elapsed_time:   13.993275325
rd_4K: { 256us: 1, 512us: 3, 1024us: 2, 2048us: 3, 4096us: 1, }
rd_64K: { 256us: 3, 512us: 2, 1024us: 3, 2048us: 2, }
rd_1024K: { 512us: 2, 1024us: 6, 2048us: 1, 8192us: 1, }
wr_4K: { 256us: 4, 512us: 3, 1024us: 2, 2048us: 1, }
wr_64K: { 256us: 3, 512us: 4, 1024us: 1, 2048us: 1, 4096us: 1, }
wr_1024K: { 512us: 1, 1024us: 1, 2048us: 5, 4096us: 2, 8192us: 1, }
osd-ldiskfs.lustre-OST0000.read_cache_enable=1
osd-ldiskfs.lustre-OST0000.writethrough_cache_enable=1