== sanity test 127f: OST IO latency histograms by size === 05:08:39 (1772186919)
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, 0.0628913 s, 651 kB/s
10+0 records in
10+0 records out
40960 bytes (41 kB, 40 KiB) copied, 0.0404664 s, 1.0 MB/s
Generating I/O with size 64K
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.0949239 s, 6.9 MB/s
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.0917652 s, 7.1 MB/s
Generating I/O with size 1024K
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.318264 s, 32.9 MB/s
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.227966 s, 46.0 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:  1772186928.289269928
start_time:     1772186921.550931790
elapsed_time:   6.738338138
rd_4K: { 128us: 10, }
rd_64K: { 256us: 6, 512us: 1, 1024us: 2, 2048us: 1, }
rd_1024K: { 512us: 10, }
wr_4K: { 128us: 6, 256us: 2, 512us: 1, 1024us: 1, }
wr_64K: { 256us: 10, }
wr_1024K: { 512us: 2, 1024us: 8, }
osd-ldiskfs.lustre-OST0000.read_cache_enable=1
osd-ldiskfs.lustre-OST0000.writethrough_cache_enable=1