== sanity test 127f: OST IO latency histograms by size === 00:48:26 (1781239706)
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, 0.243679 s, 168 kB/s
10+0 records in
10+0 records out
40960 bytes (41 kB, 40 KiB) copied, 0.244663 s, 167 kB/s
Generating I/O with size 64K
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.409274 s, 1.6 MB/s
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.343765 s, 1.9 MB/s
Generating I/O with size 1024K
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.931151 s, 11.3 MB/s
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.712682 s, 14.7 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:  1781239722.882798648
start_time:     1781239712.114557755
elapsed_time:   10.768240893
rd_4K: { 256us: 3, 512us: 4, 1024us: 1, 2048us: 2, }
rd_64K: { 256us: 1, 512us: 1, 1024us: 3, 2048us: 2, 4096us: 3, }
rd_1024K: { 1024us: 7, 2048us: 3, }
wr_4K: { 256us: 2, 512us: 4, 1024us: 3, 2048us: 1, }
wr_64K: { 256us: 1, 512us: 1, 1024us: 6, 2048us: 2, }
wr_1024K: { 1024us: 4, 2048us: 4, 4096us: 2, }
osd-ldiskfs.lustre-OST0000.read_cache_enable=1
osd-ldiskfs.lustre-OST0000.writethrough_cache_enable=1