fio -filename=/tmp/test_randread -direct=1 -iodepth 1 -thread -rw=randrw -ioengine=psync -bs=16k -size=500M -numjobs=10 -runtime=10 -group_reporting -name=mytest ting -name=mytest
mytest: (g=0): rw=randrw, bs=(R) 16.0KiB-16.0KiB, (W) 16.0KiB-16.0KiB, (T) 16.0KiB-16.0KiB, ioengine=psync, iodepth=1
...
fio-3.7
Starting 10 threads
mytest: Laying out IO file (1 file / 500MiB)
Jobs: 10 (f=10)
mytest: (groupid=0, jobs=10): err= 0: pid=12599: Fri Jan 15 08:59:36 2021
read: IOPS=80.6k, BW=1260MiB/s (1321MB/s)(2500MiB/1984msec)
clat (usec): min=27, max=31617, avg=59.35, stdev=186.77
lat (usec): min=27, max=31617, avg=59.47, stdev=186.77
clat percentiles (usec):
| 1.00th=[ 41], 5.00th=[ 49], 10.00th=[ 51], 20.00th=[ 53],
| 30.00th=[ 55], 40.00th=[ 56], 50.00th=[ 57], 60.00th=[ 58],
| 70.00th=[ 59], 80.00th=[ 60], 90.00th=[ 63], 95.00th=[ 69],
| 99.00th=[ 120], 99.50th=[ 180], 99.90th=[ 233], 99.95th=[ 289],
| 99.99th=[ 1893]
bw ( KiB/s): min=105632, max=140928, per=10.00%, avg=128985.60, stdev=9394.22, samples=30
iops : min= 6602, max= 8808, avg=8061.60, stdev=587.14, samples=30
write: IOPS=80.7k, BW=1260MiB/s (1321MB/s)(2500MiB/1984msec)
clat (usec): min=28, max=31648, avg=59.79, stdev=190.47
lat (usec): min=28, max=31648, avg=60.32, stdev=190.50
clat percentiles (usec):
| 1.00th=[ 41], 5.00th=[ 49], 10.00th=[ 51], 20.00th=[ 53],
| 30.00th=[ 55], 40.00th=[ 56], 50.00th=[ 57], 60.00th=[ 58],
| 70.00th=[ 59], 80.00th=[ 60], 90.00th=[ 64], 95.00th=[ 70],
| 99.00th=[ 128], 99.50th=[ 184], 99.90th=[ 235], 99.95th=[ 302],
| 99.99th=[ 2040]
bw ( KiB/s): min=111200, max=140832, per=10.00%, avg=129084.80, stdev=8311.57, samples=30
iops : min= 6950, max= 8802, avg=8067.80, stdev=519.47, samples=30
lat (usec) : 50=8.30%, 100=90.41%, 250=1.20%, 500=0.06%, 750=0.01%
lat (usec) : 1000=0.01%
lat (msec) : 2=0.01%, 4=0.01%, 20=0.01%, 50=0.01%
cpu : usr=3.89%, sys=25.58%, ctx=321263, majf=0, minf=16
IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0%
submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
issued rwts: total=159977,160023,0,0 short=0,0,0,0 dropped=0,0,0,0
latency : target=0, window=0, percentile=100.00%, depth=1
Run status group 0 (all jobs):
READ: bw=1260MiB/s (1321MB/s), 1260MiB/s-1260MiB/s (1321MB/s-1321MB/s), io=2500MiB (2621MB), run=1984-1984msec
WRITE: bw=1260MiB/s (1321MB/s), 1260MiB/s-1260MiB/s (1321MB/s-1321MB/s), io=2500MiB (2622MB), run=1984-1984msec
Disk stats (read/write):
dm-0: ios=143601/143570, merge=0/0, ticks=7087/7146, in_queue=14366, util=95.07%, aggrios=159977/160033, aggrmerge=0/0, aggrticks=7863/7885, aggrin_queue=15676, aggrutil=94.20%
sdb: ios=159977/160033, merge=0/0, ticks=7863/7885, in_queue=15676, util=94.20%