So i performed same fio as davorzec on my RS 2000 (iddling)
Code
fio --name=mixed_workload --filename=~/fio_test.file --size=10G \
--rw=randrw --rwmixread=75 --bs=4k --ioengine=libaio --direct=1 \
--numjobs=4 --iodepth=16 --runtime=60 --time_based --group_reporting
mixed_workload: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=libaio, iodepth=16
...
fio-3.39
Starting 4 processes
mixed_workload: Laying out IO file (1 file / 10240MiB)
Jobs: 4 (f=0): [f(4)][100.0%][r=284MiB/s,w=93.6MiB/s][r=72.7k,w=23.9k IOPS][eta 00m:00s]
mixed_workload: (groupid=0, jobs=4): err= 0: pid=500344: Mon Aug 3 21:52:35 2026
read: IOPS=75.1k, BW=293MiB/s (308MB/s)(17.2GiB/60001msec)
slat (nsec): min=761, max=1884.1k, avg=2652.56, stdev=1984.20
clat (usec): min=55, max=13371, avg=782.53, stdev=128.74
lat (usec): min=77, max=13377, avg=785.18, stdev=128.77
clat percentiles (usec):
| 1.00th=[ 474], 5.00th=[ 685], 10.00th=[ 709], 20.00th=[ 734],
| 30.00th=[ 758], 40.00th=[ 766], 50.00th=[ 783], 60.00th=[ 799],
| 70.00th=[ 816], 80.00th=[ 832], 90.00th=[ 857], 95.00th=[ 881],
| 99.00th=[ 938], 99.50th=[ 971], 99.90th=[ 1139], 99.95th=[ 1336],
| 99.99th=[ 6587]
bw ( KiB/s): min=280752, max=358266, per=100.00%, avg=300339.15, stdev=1602.27, samples=480
iops : min=70188, max=89566, avg=75084.82, stdev=400.56, samples=480
write: IOPS=25.1k, BW=98.0MiB/s (103MB/s)(5878MiB/60001msec); 0 zone resets
slat (nsec): min=912, max=525562, avg=2967.64, stdev=1934.44
clat (usec): min=35, max=18793, avg=196.68, stdev=139.03
lat (usec): min=39, max=18796, avg=199.65, stdev=139.03
clat percentiles (usec):
| 1.00th=[ 114], 5.00th=[ 127], 10.00th=[ 135], 20.00th=[ 147],
| 30.00th=[ 157], 40.00th=[ 167], 50.00th=[ 180], 60.00th=[ 190],
| 70.00th=[ 204], 80.00th=[ 221], 90.00th=[ 260], 95.00th=[ 330],
| 99.00th=[ 537], 99.50th=[ 635], 99.90th=[ 996], 99.95th=[ 1352],
| 99.99th=[ 6783]
bw ( KiB/s): min=92336, max=121717, per=100.00%, avg=100324.64, stdev=729.36, samples=480
iops : min=23084, max=30429, avg=25081.16, stdev=182.34, samples=480
lat (usec) : 50=0.01%, 100=0.06%, 250=22.27%, 500=3.17%, 750=20.00%
lat (usec) : 1000=54.24%
lat (msec) : 2=0.22%, 4=0.01%, 10=0.02%, 20=0.01%
cpu : usr=2.30%, sys=8.87%, ctx=4464948, majf=0, minf=46
IO depths : 1=0.1%, 2=0.1%, 4=0.1%, 8=0.1%, 16=100.0%, 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=0.1%, 32=0.0%, 64=0.0%, >=64=0.0%
issued rwts: total=4505067,1504862,0,0 short=0,0,0,0 dropped=0,0,0,0
latency : target=0, window=0, percentile=100.00%, depth=16
Run status group 0 (all jobs):
READ: bw=293MiB/s (308MB/s), 293MiB/s-293MiB/s (308MB/s-308MB/s), io=17.2GiB (18.5GB), run=60001-60001msec
WRITE: bw=98.0MiB/s (103MB/s), 98.0MiB/s-98.0MiB/s (103MB/s-103MB/s), io=5878MiB (6164MB), run=60001-60001msec
Disk stats (read/write):
vda: ios=4493392/1501032, sectors=35947560/12009064, merge=30/98, ticks=3513055/290992, in_queue=3804050, util=83.93%
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