== sanity test 127f: OST IO latency histograms by size === 02:48:19 (1781246899)
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, 0.225975 s, 181 kB/s
10+0 records in
10+0 records out
40960 bytes (41 kB, 40 KiB) copied, 0.169279 s, 242 kB/s
Generating I/O with size 64K
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.239813 s, 2.7 MB/s
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.161601 s, 4.1 MB/s
Generating I/O with size 1024K
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.97981 s, 10.7 MB/s
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.612821 s, 17.1 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:  1781246915.049678395
start_time:     1781246905.438092110
elapsed_time:   9.611586285
rd_4K: { 256us: 4, 512us: 2, 1024us: 4, }
rd_64K: { 256us: 2, 512us: 7, 1024us: 1, }
rd_1024K: { 512us: 3, 1024us: 5, 2048us: 2, }
wr_4K: { 256us: 3, 512us: 7, }
wr_64K: { 256us: 3, 512us: 4, 1024us: 2, 4096us: 1, }
wr_1024K: { 1024us: 3, 2048us: 6, 4096us: 1, }
osd-ldiskfs.lustre-OST0000.read_cache_enable=1
osd-ldiskfs.lustre-OST0000.writethrough_cache_enable=1