== sanity test 127f: OST IO latency histograms by size === 23:50:09 (1775879409)
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, 0.0881496 s, 465 kB/s
10+0 records in
10+0 records out
40960 bytes (41 kB, 40 KiB) copied, 0.0734611 s, 558 kB/s
Generating I/O with size 64K
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.113205 s, 5.8 MB/s
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.0708822 s, 9.2 MB/s
Generating I/O with size 1024K
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.349144 s, 30.0 MB/s
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.228408 s, 45.9 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:  1775879420.185884378
start_time:     1775879413.233535605
elapsed_time:   6.952348773
rd_4K: { 128us: 3, 256us: 4, 512us: 1, 1024us: 1, 2048us: 1, }
rd_64K: { 128us: 2, 256us: 6, 512us: 1, 1024us: 1, }
rd_1024K: { 512us: 8, 1024us: 1, 2048us: 1, }
wr_4K: { 128us: 1, 256us: 7, 512us: 1, 2048us: 1, }
wr_64K: { 128us: 3, 256us: 6, 512us: 1, }
wr_1024K: { 512us: 10, }
osd-ldiskfs.lustre-OST0000.read_cache_enable=1
osd-ldiskfs.lustre-OST0000.writethrough_cache_enable=1