== sanity test 127f: OST IO latency histograms by size === 02:16:10 (1786428970)
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, 0.21161 s, 194 kB/s
10+0 records in
10+0 records out
40960 bytes (41 kB, 40 KiB) copied, 0.109343 s, 375 kB/s
Generating I/O with size 64K
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.221122 s, 3.0 MB/s
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.198915 s, 3.3 MB/s
Generating I/O with size 1024K
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 1.22565 s, 8.6 MB/s
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.639831 s, 16.4 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:  1786428986.526723976
start_time:     1786428976.462727031
elapsed_time:   10.063996945
rd_4K: { 256us: 4, 512us: 5, 1024us: 1, }
rd_64K: { 256us: 7, 512us: 3, }
rd_1024K: { 1024us: 8, 2048us: 2, }
wr_4K: { 256us: 3, 512us: 5, 1024us: 2, }
wr_64K: { 256us: 3, 512us: 5, 1024us: 2, }
wr_1024K: { 512us: 1, 1024us: 4, 2048us: 2, 4096us: 1, 8192us: 1, 32768us: 1, }
osd-ldiskfs.lustre-OST0000.read_cache_enable=1
osd-ldiskfs.lustre-OST0000.writethrough_cache_enable=1