== sanity test 127f: OST IO latency histograms by size === 12:44:52 (1788367492)
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, 0.0840612 s, 487 kB/s
10+0 records in
10+0 records out
40960 bytes (41 kB, 40 KiB) copied, 0.0573191 s, 715 kB/s
Generating I/O with size 64K
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.115716 s, 5.7 MB/s
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.0687904 s, 9.5 MB/s
Generating I/O with size 1024K
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.33895 s, 30.9 MB/s
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.216008 s, 48.5 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:  1788367501.410565600
start_time:     1788367494.550445066
elapsed_time:   6.860120534
rd_4K: { 128us: 8, 256us: 2, }
rd_64K: { 128us: 3, 256us: 7, }
rd_1024K: { 512us: 8, 1024us: 1, 2048us: 1, }
wr_4K: { 128us: 1, 256us: 8, 512us: 1, }
wr_64K: { 128us: 1, 256us: 9, }
wr_1024K: { 512us: 9, 1024us: 1, }
osd-ldiskfs.lustre-OST0000.read_cache_enable=1
osd-ldiskfs.lustre-OST0000.writethrough_cache_enable=1