== sanity test 127f: OST IO latency histograms by size === 00:02:25 (1781236945)
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, 0.118065 s, 347 kB/s
10+0 records in
10+0 records out
40960 bytes (41 kB, 40 KiB) copied, 0.0634881 s, 645 kB/s
Generating I/O with size 64K
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.139083 s, 4.7 MB/s
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.0996242 s, 6.6 MB/s
Generating I/O with size 1024K
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.36823 s, 28.5 MB/s
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.250569 s, 41.8 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:  1781236955.827789106
start_time:     1781236948.744972059
elapsed_time:   7.082817047
rd_4K: { 128us: 2, 256us: 8, }
rd_64K: { 256us: 9, 512us: 1, }
rd_1024K: { 512us: 4, 1024us: 6, }
wr_4K: { 256us: 5, 512us: 4, 1024us: 1, }
wr_64K: { 256us: 7, 512us: 2, 1024us: 1, }
wr_1024K: { 512us: 3, 1024us: 7, }
osd-ldiskfs.lustre-OST0000.read_cache_enable=1
osd-ldiskfs.lustre-OST0000.writethrough_cache_enable=1