== sanity test 127f: OST IO latency histograms by size === 10:45:27 (1787582727)
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, 0.204461 s, 200 kB/s
10+0 records in
10+0 records out
40960 bytes (41 kB, 40 KiB) copied, 0.157087 s, 261 kB/s
Generating I/O with size 64K
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.213172 s, 3.1 MB/s
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.170245 s, 3.8 MB/s
Generating I/O with size 1024K
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.605958 s, 17.3 MB/s
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.651769 s, 16.1 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:  1787582745.332299810
start_time:     1787582735.453131895
elapsed_time:   9.879167915
rd_4K: { 256us: 2, 512us: 6, 1024us: 1, 2048us: 1, }
rd_64K: { 256us: 9, 512us: 1, }
rd_1024K: { 512us: 2, 1024us: 5, 2048us: 2, 4096us: 1, }
wr_4K: { 256us: 3, 512us: 3, 1024us: 4, }
wr_64K: { 256us: 4, 512us: 4, 1024us: 1, 2048us: 1, }
wr_1024K: { 512us: 2, 1024us: 7, 2048us: 1, }
osd-ldiskfs.lustre-OST0000.read_cache_enable=1
osd-ldiskfs.lustre-OST0000.writethrough_cache_enable=1