== sanity test 127f: OST IO latency histograms by size === 22:45:04 (1787107504)
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, 0.0856528 s, 478 kB/s
10+0 records in
10+0 records out
40960 bytes (41 kB, 40 KiB) copied, 0.0463882 s, 883 kB/s
Generating I/O with size 64K
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.12969 s, 5.1 MB/s
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.078852 s, 8.3 MB/s
Generating I/O with size 1024K
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.337008 s, 31.1 MB/s
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.205043 s, 51.1 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:  1787107514.313429907
start_time:     1787107507.472512890
elapsed_time:   6.840917017
rd_4K: { 128us: 8, 256us: 2, }
rd_64K: { 128us: 4, 256us: 5, 1024us: 1, }
rd_1024K: { 512us: 10, }
wr_4K: { 128us: 4, 256us: 4, 512us: 1, 1024us: 1, }
wr_64K: { 128us: 2, 256us: 6, 512us: 2, }
wr_1024K: { 512us: 8, 1024us: 2, }
osd-ldiskfs.lustre-OST0000.read_cache_enable=1
osd-ldiskfs.lustre-OST0000.writethrough_cache_enable=1