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железо: | |
disk = disk= WDC PC SN520 SDAPMUW-512G-1101 | |
cpu = Intel(R) Core(TM) i5-8265U CPU @ 1.60GHz stepping 12 | |
-------------------- | |
конфиг: | |
$ cat rr.fio | |
[global] | |
name=nvme-rand-read | |
time_based | |
ramp_time=5 | |
runtime=60 | |
readwrite=randread | |
random_generator=lfsr | |
bs=4k | |
ioengine=libaio | |
direct=1 | |
numjobs=6 | |
iodepth=16 | |
group_reporting=1 | |
size=30000M | |
randrepeat=1 | |
[nvme0] | |
new_group | |
filename=/home/vasya/temp/04/test | |
--------------------------- | |
тест: | |
$ fio ./rr.fio | |
nvme0: (g=0): rw=randread, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=libaio, iodepth=16 | |
... | |
fio-3.1 | |
Starting 6 processes | |
Jobs: 6 (f=6): [r(6)][100.0%][r=494MiB/s,w=0KiB/s][r=127k,w=0 IOPS][eta 00m:00s] | |
nvme0: (groupid=0, jobs=6): err= 0: pid=4282: Wed Nov 16 00:33:29 2022 | |
read: IOPS=125k, BW=490MiB/s (513MB/s)(28.7GiB/60001msec) | |
slat (usec): min=14, max=35189, avg=39.10, stdev=33.72 | |
clat (usec): min=76, max=39932, avg=725.08, stdev=289.61 | |
lat (usec): min=129, max=39977, avg=764.31, stdev=291.48 | |
clat percentiles (usec): | |
| 1.00th=[ 227], 5.00th=[ 318], 10.00th=[ 396], 20.00th=[ 510], | |
| 30.00th=[ 603], 40.00th=[ 668], 50.00th=[ 725], 60.00th=[ 783], | |
| 70.00th=[ 848], 80.00th=[ 922], 90.00th=[ 1020], 95.00th=[ 1106], | |
| 99.00th=[ 1319], 99.50th=[ 1467], 99.90th=[ 2474], 99.95th=[ 3064], | |
| 99.99th=[ 6783] | |
bw ( KiB/s): min=72072, max=87326, per=16.74%, avg=83942.62, stdev=1470.92, samples=714 | |
iops : min=18018, max=21831, avg=20985.48, stdev=367.68, samples=714 | |
lat (usec) : 100=0.01%, 250=1.91%, 500=17.06%, 750=35.88%, 1000=33.60% | |
lat (msec) : 2=11.39%, 4=0.14%, 10=0.02%, 20=0.01%, 50=0.01% | |
cpu : usr=5.18%, sys=85.19%, ctx=439518, majf=0, minf=15 | |
IO depths : 1=0.1%, 2=0.1%, 4=0.1%, 8=0.1%, 16=108.2%, 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 rwt: total=7520515,0,0, short=0,0,0, dropped=0,0,0 | |
latency : target=0, window=0, percentile=100.00%, depth=16 | |
Run status group 0 (all jobs): | |
READ: bw=490MiB/s (513MB/s), 490MiB/s-490MiB/s (513MB/s-513MB/s), io=28.7GiB (30.8GB), run=60001-60001msec | |
Disk stats (read/write): | |
nvme0n1: ios=8138264/695, merge=22/413, ticks=4868968/239, in_queue=44, util=99.96% | |
вывод: | |
условия: bs=4k, numjobs=6, iodepth=16. | |
резултат: IOPS=125k при латенции на чтение средняя avg=764.31 микросекунд = 0,76 миллисекунд | |
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