fio --name disk-test --direct=1 --rw=randread --bs=4k --size=1G --numjobs=4 --time_based --runtime=180 --group_reporting --norandommap
###
disk-test: (g=0): rw=randread, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=1
...
fio-3.28
Starting 4 processes
disk-test: Laying out IO file (1 file / 1024MiB)
disk-test: Laying out IO file (1 file / 1024MiB)
disk-test: Laying out IO file (1 file / 1024MiB)
disk-test: Laying out IO file (1 file / 1024MiB)
Jobs: 4 (f=4): [r(4)][100.0%][r=70.3MiB/s][r=18.0k IOPS][eta 00m:00s]
disk-test: (groupid=0, jobs=4): err= 0: pid=10013: Mon Sep 2 01:11:56 2024
read: IOPS=27.9k, BW=109MiB/s (114MB/s)(19.1GiB/180001msec)
clat (usec): min=35, max=35614, avg=142.43, stdev=65.19
lat (usec): min=35, max=35614, avg=142.54, stdev=65.20
clat percentiles (usec):
| 1.00th=[ 76], 5.00th=[ 82], 10.00th=[ 87], 20.00th=[ 100],
| 30.00th=[ 116], 40.00th=[ 125], 50.00th=[ 135], 60.00th=[ 149],
| 70.00th=[ 163], 80.00th=[ 174], 90.00th=[ 202], 95.00th=[ 219],
| 99.00th=[ 285], 99.50th=[ 330], 99.90th=[ 523], 99.95th=[ 676],
| 99.99th=[ 1500]
bw ( KiB/s): min=57668, max=136976, per=100.00%, avg=111576.25, stdev=2383.78, samples=1436
iops : min=14417, max=34244, avg=27893.84, stdev=595.95, samples=1436
lat (usec) : 50=0.01%, 100=20.35%, 250=77.37%, 500=2.16%, 750=0.08%
lat (usec) : 1000=0.02%
lat (msec) : 2=0.01%, 4=0.01%, 10=0.01%, 20=0.01%, 50=0.01%
cpu : usr=2.19%, sys=7.89%, ctx=5016450, majf=0, minf=62
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=5016461,0,0,0 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=109MiB/s (114MB/s), 109MiB/s-109MiB/s (114MB/s-114MB/s), io=19.1GiB (20.5GB), run=180001-180001msec
Disk stats (read/write):
vda: ios=5012300/118, merge=0/63, ticks=670091/17, in_queue=670108, util=100.00%
fio --name disk-test --direct=1 --rw=randwrite --bs=4k --size=1G --numjobs=4 --time_based --runtime=180 --group_reporting --norandommap
###
disk-test: (g=0): rw=randwrite, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=1
...
fio-3.28
Starting 4 processes
Jobs: 4 (f=4): [w(4)][100.0%][w=276MiB/s][w=70.7k IOPS][eta 00m:00s]
disk-test: (groupid=0, jobs=4): err= 0: pid=10071: Mon Sep 2 01:15:09 2024
write: IOPS=68.7k, BW=269MiB/s (282MB/s)(47.2GiB/180002msec); 0 zone resets
clat (usec): min=19, max=17606, avg=57.27, stdev=60.48
lat (usec): min=19, max=17607, avg=57.43, stdev=60.50
clat percentiles (usec):
| 1.00th=[ 29], 5.00th=[ 34], 10.00th=[ 37], 20.00th=[ 41],
| 30.00th=[ 44], 40.00th=[ 47], 50.00th=[ 51], 60.00th=[ 56],
| 70.00th=[ 64], 80.00th=[ 73], 90.00th=[ 82], 95.00th=[ 89],
| 99.00th=[ 130], 99.50th=[ 161], 99.90th=[ 338], 99.95th=[ 717],
| 99.99th=[ 1893]
bw ( KiB/s): min=117120, max=386264, per=100.00%, avg=275169.80, stdev=8585.38, samples=1436
iops : min=29280, max=96566, avg=68792.43, stdev=2146.33, samples=1436
lat (usec) : 20=0.01%, 50=48.10%, 100=49.46%, 250=2.28%, 500=0.09%
lat (usec) : 750=0.02%, 1000=0.01%
lat (msec) : 2=0.02%, 4=0.01%, 10=0.01%, 20=0.01%
cpu : usr=4.41%, sys=15.55%, ctx=12371462, majf=0, minf=52
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=0,12373012,0,0 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=269MiB/s (282MB/s), 269MiB/s-269MiB/s (282MB/s-282MB/s), io=47.2GiB (50.7GB), run=180002-180002msec
Disk stats (read/write):
vda: ios=0/12365137, merge=0/81, ticks=0/619056, in_queue=619062, util=100.00%
