== sanity test 127f: OST IO latency histograms by size === 19:58:38 (1781222318)
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, 0.157326 s, 260 kB/s
10+0 records in
10+0 records out
40960 bytes (41 kB, 40 KiB) copied, 0.0945029 s, 433 kB/s
Generating I/O with size 64K
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.339123 s, 1.9 MB/s
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.243054 s, 2.7 MB/s
Generating I/O with size 1024K
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 1.01586 s, 10.3 MB/s
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.92438 s, 11.3 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:  1781222335.126928013
start_time:     1781222324.135584192
elapsed_time:   10.991343821
rd_4K: { 128us: 2, 256us: 4, 512us: 3, 1024us: 1, }
rd_64K: { 256us: 5, 512us: 1, 1024us: 1, 2048us: 1, 4096us: 2, }
rd_1024K: { 512us: 1, 1024us: 5, 2048us: 2, 4096us: 2, }
wr_4K: { 256us: 4, 512us: 3, 1024us: 3, }
wr_64K: { 256us: 3, 512us: 3, 1024us: 3, 2048us: 1, }
wr_1024K: { 512us: 1, 1024us: 4, 2048us: 1, 4096us: 2, 8192us: 2, }
osd-ldiskfs.lustre-OST0000.read_cache_enable=1
osd-ldiskfs.lustre-OST0000.writethrough_cache_enable=1