== sanity test 127f: OST IO latency histograms by size === 11:59:08 (1781625548)
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, 0.162179 s, 253 kB/s
10+0 records in
10+0 records out
40960 bytes (41 kB, 40 KiB) copied, 0.0982232 s, 417 kB/s
Generating I/O with size 64K
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.27797 s, 2.4 MB/s
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.253859 s, 2.6 MB/s
Generating I/O with size 1024K
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.846704 s, 12.4 MB/s
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.553893 s, 18.9 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:  1781625562.718383937
start_time:     1781625553.551514199
elapsed_time:   9.166869738
rd_4K: { 128us: 1, 256us: 4, 512us: 4, 2048us: 1, }
rd_64K: { 256us: 2, 512us: 7, 2048us: 1, }
rd_1024K: { 512us: 2, 1024us: 7, 2048us: 1, }
wr_4K: { 128us: 2, 256us: 5, 512us: 2, 2048us: 1, }
wr_64K: { 256us: 4, 512us: 4, 1024us: 1, 2048us: 1, }
wr_1024K: { 1024us: 3, 2048us: 6, 8192us: 1, }
osd-ldiskfs.lustre-OST0000.read_cache_enable=1
osd-ldiskfs.lustre-OST0000.writethrough_cache_enable=1