[Linux] iops 측정 방법

# yum install -y fio

# cpupower idle-info | grep "Number of idle states:"

# for i in `seq 1 $((N-1))`; do cpupower idle-set -d $i; done

16KB 임의 쓰기 작업(IOPS SSD)

# fio --directory=/mnt/p_iops_vol0 --name fio_test_file --direct=1 --rw=randwrite --bs=16k --size=1G --numjobs=16 --time_based --runtime=180 --group_reporting --norandommap

16KB 임의 읽기 작업(IOPS SSD)

# fio --directory=/mnt/p_iops_vol0 --name fio_test_file --direct=1 --rw=randread --bs=16k --size=1G --numjobs=16 --time_based --runtime=180 --group_reporting --norandommap

1MiB 임의 읽기 작업(HDD)

# fio --filename=/dev/<device> --direct=1 --rw=read --randrepeat=0 --ioengine=libaio --bs=1024k --iodepth=8 --time_based=1 --runtime=180 --name=fio_direct_read_test

1MiB 임의 쓰기 작업(HDD)

# fio --filename=/dev/<device> --direct=1 --rw=write --randrepeat=0 --ioengine=libaio --bs=1024k --iodepth=8 --time_based=1 --runtime=180 --name=fio_direct_write_test

# vi fio_rw_mix.cfg

-------------------------------

[global] 

clocksource=clock_gettime

randrepeat=0

runtime=180

offset_increment=100g

 

[sequential-write]

bs=1M

ioengine=libaio

direct=1

iodepth=8

filename=/dev/<device>

do_verify=0

rw=write

rwmixread=0

rwmixwrite=100 

[sequential-read] 

bs=1M

ioengine=libaio

direct=1

iodepth=8

filename=/dev/<device>

do_verify=0

rw=read

rwmixread=100

rwmixwrite=0

-------------------------------

# fio fio_rw_mix.cfg

참고 : 

https://docs.aws.amazon.com/ko_kr/AWSEC2/latest/UserGuide/benchmark_procedures.html

Throughput in MiB/s = (Volume size in GiB) × (IOPS per GiB) × (I/O size in KiB)

T = VIR

        T          

V  =  -----  

       I R