== sanity test 127f: OST IO latency histograms by size === 16:37:37 (1789591057)
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, 0.178825 s, 229 kB/s
10+0 records in
10+0 records out
40960 bytes (41 kB, 40 KiB) copied, 0.17229 s, 238 kB/s
Generating I/O with size 64K
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.350537 s, 1.9 MB/s
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.257055 s, 2.5 MB/s
Generating I/O with size 1024K
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.991927 s, 10.6 MB/s
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.782342 s, 13.4 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:  1789591074.911671695
start_time:     1789591064.280575413
elapsed_time:   10.631096282
rd_4K: { 256us: 1, 512us: 4, 1024us: 3, 2048us: 2, }
rd_64K: { 256us: 1, 512us: 8, 1024us: 1, }
rd_1024K: { 1024us: 7, 2048us: 2, 4096us: 1, }
wr_4K: { 256us: 2, 512us: 3, 1024us: 5, }
wr_64K: { 512us: 2, 1024us: 6, 2048us: 1, 4096us: 1, }
wr_1024K: { 1024us: 5, 2048us: 3, 4096us: 1, 8192us: 1, }
osd-ldiskfs.lustre-OST0000.read_cache_enable=1
osd-ldiskfs.lustre-OST0000.writethrough_cache_enable=1