== sanity test 127f: OST IO latency histograms by size === 19:11:21 (1786317081)
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, 0.32188 s, 127 kB/s
10+0 records in
10+0 records out
40960 bytes (41 kB, 40 KiB) copied, 0.122085 s, 336 kB/s
Generating I/O with size 64K
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.36232 s, 1.8 MB/s
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.264214 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, 1.16536 s, 9.0 MB/s
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.475937 s, 22.0 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:  1786317098.157010701
start_time:     1786317087.653268221
elapsed_time:   10.503742480
rd_4K: { 256us: 4, 512us: 5, 1024us: 1, }
rd_64K: { 512us: 4, 1024us: 6, }
rd_1024K: { 512us: 2, 1024us: 7, 4096us: 1, }
wr_4K: { 512us: 3, 1024us: 5, 2048us: 2, }
wr_64K: { 512us: 3, 1024us: 1, 2048us: 6, }
wr_1024K: { 1024us: 4, 2048us: 4, 4096us: 1, 8192us: 1, }
osd-ldiskfs.lustre-OST0000.read_cache_enable=1
osd-ldiskfs.lustre-OST0000.writethrough_cache_enable=1