== sanity test 127f: OST IO latency histograms by size === 01:17:00 (1777007820)
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, 0.0935211 s, 438 kB/s
10+0 records in
10+0 records out
40960 bytes (41 kB, 40 KiB) copied, 0.0764424 s, 536 kB/s
Generating I/O with size 64K
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.177645 s, 3.7 MB/s
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.119589 s, 5.5 MB/s
Generating I/O with size 1024K
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.474665 s, 22.1 MB/s
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.414708 s, 25.3 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:  1777007832.299083432
start_time:     1777007824.744782829
elapsed_time:   7.554300603
rd_4K: { 128us: 3, 256us: 5, 1024us: 2, }
rd_64K: { 256us: 6, 512us: 1, 1024us: 3, }
rd_1024K: { 512us: 3, 1024us: 4, 2048us: 3, }
wr_4K: { 128us: 2, 256us: 7, 512us: 1, }
wr_64K: { 256us: 2, 512us: 6, 1024us: 1, 2048us: 1, }
wr_1024K: { 512us: 5, 1024us: 4, 2048us: 1, }
osd-ldiskfs.lustre-OST0000.read_cache_enable=1
osd-ldiskfs.lustre-OST0000.writethrough_cache_enable=1