== sanity test 127f: OST IO latency histograms by size === 01:15:44 (1789362944)
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, 0.0864962 s, 474 kB/s
10+0 records in
10+0 records out
40960 bytes (41 kB, 40 KiB) copied, 0.050504 s, 811 kB/s
Generating I/O with size 64K
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.0979435 s, 6.7 MB/s
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.0623658 s, 10.5 MB/s
Generating I/O with size 1024K
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.341747 s, 30.7 MB/s
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.213926 s, 49.0 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:  1789362954.107998945
start_time:     1789362947.345495919
elapsed_time:   6.762503026
rd_4K: { 64us: 1, 128us: 7, 256us: 1, 512us: 1, }
rd_64K: { 128us: 6, 256us: 4, }
rd_1024K: { 512us: 7, 1024us: 1, 2048us: 2, }
wr_4K: { 128us: 6, 256us: 3, 2048us: 1, }
wr_64K: { 128us: 6, 256us: 4, }
wr_1024K: { 512us: 9, 1024us: 1, }
osd-ldiskfs.lustre-OST0000.read_cache_enable=1
osd-ldiskfs.lustre-OST0000.writethrough_cache_enable=1