== sanity test 127f: OST IO latency histograms by size === 18:40:30 (1788734430)
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, 0.0561976 s, 729 kB/s
10+0 records in
10+0 records out
40960 bytes (41 kB, 40 KiB) copied, 0.0353735 s, 1.2 MB/s
Generating I/O with size 64K
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.078379 s, 8.4 MB/s
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.06124 s, 10.7 MB/s
Generating I/O with size 1024K
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.318636 s, 32.9 MB/s
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.206989 s, 50.7 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:  1788734439.321488813
start_time:     1788734432.739236418
elapsed_time:   6.582252395
rd_4K: { 64us: 1, 128us: 9, }
rd_64K: { 128us: 7, 256us: 3, }
rd_1024K: { 512us: 7, 1024us: 3, }
wr_4K: { 128us: 9, 256us: 1, }
wr_64K: { 128us: 9, 256us: 1, }
wr_1024K: { 512us: 9, 1024us: 1, }
osd-ldiskfs.lustre-OST0000.read_cache_enable=1
osd-ldiskfs.lustre-OST0000.writethrough_cache_enable=1