== sanity test 127f: OST IO latency histograms by size === 06:41:40 (1787136100)
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, 0.243196 s, 168 kB/s
10+0 records in
10+0 records out
40960 bytes (41 kB, 40 KiB) copied, 0.157881 s, 259 kB/s
Generating I/O with size 64K
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.379879 s, 1.7 MB/s
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.335334 s, 2.0 MB/s
Generating I/O with size 1024K
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 1.16341 s, 9.0 MB/s
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.562385 s, 18.6 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:  1787136117.509303882
start_time:     1787136106.398451967
elapsed_time:   11.110851915
rd_4K: { 256us: 4, 512us: 4, 1024us: 1, 2048us: 1, }
rd_64K: { 256us: 2, 512us: 6, 1024us: 2, }
rd_1024K: { 1024us: 10, }
wr_4K: { 256us: 4, 512us: 1, 1024us: 4, 2048us: 1, }
wr_64K: { 256us: 2, 512us: 4, 1024us: 2, 2048us: 2, }
wr_1024K: { 1024us: 2, 2048us: 5, 4096us: 3, }
osd-ldiskfs.lustre-OST0000.read_cache_enable=1
osd-ldiskfs.lustre-OST0000.writethrough_cache_enable=1