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sudo fio --name=randwrite --ioengine=libaio --iodepth=1 --rw=randwrite --bs=4k --direct=0 --size=512M --numjobs=2 --runtime=240 --group_reporting

randwrite: (g=0): rw=randwrite, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=libaio, iodepth=1

...

fio-3.25

Starting 2 processes

randwrite: Laying out IO file (1 file / 512MiB)

randwrite: Laying out IO file (1 file / 512MiB)

Jobs: 2 (f=2)

randwrite: (groupid=0, jobs=2): err= 0: pid=24595: Tue Jan 31 21:44:04 2023

? write: IOPS=215k, BW=839MiB/s (879MB/s)(1024MiB/1221msec); 0 zone resets

? ? slat (usec): min=4, max=13374, avg= 7.93, stdev=109.96

? ? clat (nsec): min=291, max=6630.3k, avg=509.39, stdev=12952.41

? ? ?lat (usec): min=5, max=13378, avg= 8.55, stdev=110.74

? ? clat percentiles (nsec):

? ? ?|? 1.00th=[? 290],? 5.00th=[? 290], 10.00th=[? 290], 20.00th=[? 294],

? ? ?| 30.00th=[? 294], 40.00th=[? 294], 50.00th=[? 580], 60.00th=[? 580],

? ? ?| 70.00th=[? 580], 80.00th=[? 580], 90.00th=[? 588], 95.00th=[? 588],

? ? ?| 99.00th=[ 1752], 99.50th=[ 1752], 99.90th=[ 2040], 99.95th=[ 2040],

? ? ?| 99.99th=[ 9920]

? ?bw (? KiB/s): min=953480, max=999040, per=100.00%, avg=976260.00, stdev=13213.01, samples=4

? ?iops? ? ? ? : min=238368, max=249760, avg=244064.00, stdev=3303.88, samples=4

? lat (nsec)? ?: 500=41.81%, 750=56.39%, 1000=0.06%

? lat (usec)? ?: 2=1.52%, 4=0.20%, 10=0.01%, 20=0.01%, 50=0.01%

? lat (msec)? ?: 10=0.01%

? cpu? ? ? ? ? : usr=12.60%, sys=70.27%, ctx=104, majf=0, minf=42

? 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=0,262144,0,0 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):

? WRITE: bw=839MiB/s (879MB/s), 839MiB/s-839MiB/s (879MB/s-879MB/s), io=1024MiB (1074MB), run=1221-1221msec

Disk stats (read/write):

? nvme0n1: ios=0/3964, merge=0/7, ticks=0/72939, in_queue=72938, util=45.75%

root@orangepi5:~#