time fio --randrepeat=1 --ioengine=libaio --direct=1 --gtod_reduce=1 --name=test --filename=test --bs=4k --iodepth=64 --size=50G --readwrite=randrw
test: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=libaio, iodepth=64
fio-3.19
Starting 1 process
test: Laying out IO file (1 file / 51200MiB)
Jobs: 1 (f=1): [m(1)][100.0%][r=142MiB/s,w=141MiB/s][r=36.2k,w=36.2k IOPS][eta 00m:00s]
test: (groupid=0, jobs=1): err= 0: pid=1569299: Sat Aug 26 18:04:01 2023
read: IOPS=37.4k, BW=146MiB/s (153MB/s)(25.0GiB/175461msec)
bw ( KiB/s): min=78834, max=171064, per=100.00%, avg=149750.34, stdev=13192.59, samples=349
iops : min=19708, max=42766, avg=37437.41, stdev=3298.16, samples=349
write: IOPS=37.3k, BW=146MiB/s (153MB/s)(24.0GiB/175461msec); 0 zone resets
bw ( KiB/s): min=80294, max=172896, per=100.00%, avg=149669.40, stdev=13162.80, samples=349
iops : min=20073, max=43224, avg=37417.15, stdev=3290.71, samples=349
cpu : usr=14.11%, sys=52.12%, ctx=1110320, majf=0, minf=8
IO depths : 1=0.1%, 2=0.1%, 4=0.1%, 8=0.1%, 16=0.1%, 32=0.1%, >=64=100.0%
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=0.1%, >=64=0.0%
issued rwts: total=6555326,6551874,0,0 short=0,0,0,0 dropped=0,0,0,0
latency : target=0, window=0, percentile=100.00%, depth=64
Run status group 0 (all jobs):
READ: bw=146MiB/s (153MB/s), 146MiB/s-146MiB/s (153MB/s-153MB/s), io=25.0GiB (26.8GB), run=175461-175461msec
WRITE: bw=146MiB/s (153MB/s), 146MiB/s-146MiB/s (153MB/s-153MB/s), io=24.0GiB (26.8GB), run=175461-175461msec
Disk stats (read/write):
dm-0: ios=6549510/6546415, merge=0/0, ticks=5668255/4133245, in_queue=9801500, util=100.00%, aggrios=6555438/6552300, aggrmerge=0/29, aggrticks=5637829/4101724, aggrin_queue=9739553, aggrutil=100.00%
sda: ios=6555438/6552300, merge=0/29, ticks=5637829/4101724, in_queue=9739553, util=100.00%
real 3m59.958s
user 0m44.347s
sys 2m15.275s