Linux Storage Benchmark (IOPS)

[Emad R]

Hi

I need something simple to test Linux storage and extra points if I can bench NFS shares

I tried iostat, but this command
iostat -d <your disk name> | grep <your disk name> | awk '{ print $2; }'

from
https://unix.stackexchange.com/questions/225095/how-to-get-total-read-and-total-write-iops-in-linux

gives you very different variated results, I ran it got
80
kept running it and those are results
79
78
77
76
continuous decrease till 70
reboot
then run and results starts from 448
then continuous decrease

I want something stable and works like GeekBench for CPU

[black3dynamite]

I was thinking Dell Performance Analysis Collection kit would work but you want to also benchmark nfs shares and want something simple.

[scottalanmiller]

iostat reports on disk usage, not disk capability. Very different things. You want to know the top speed of your disks, not how much they are being used. Like the difference between knowing your car can go 180 k/h, versus knowing it is currently going 60 k/h.

[scottalanmiller]

Start with hdparm. Something like this...

sudo hdparm -Tt yourdevice

[scottalanmiller]

Or...

sudo hdparm -v yourdevice

[scottalanmiller]

Is this a server or a desktop? If you have a GUI, check out gnome-disks

[scottalanmiller]

You can use dd, too. Mount the disk in question and do something like this...

dd if=/dev/zero of=/mydrivemount/output bs=8k count=10k

Just delete that file when you are done.

[1337]

FIO

[Emad R]

@scottalanmiller

II used hdparm, and this server or gui less, but I am not getting what I want, I want IOPS

like any windows utility notice the screenshot above SSD IOPS is ~55,000 R and 46000 Write

I want something that will allow me to get the IOPS in linux, those give me speed of file transfer but not IOPS

[scottalanmiller]

You'll need FIO as Pete says.

[dyasny]

https://github.com/vladzcloudius/diskplorer

This is a cool wrapper for FIO, written by a colleague of mine. FIO provides you with the maximums, while this tool will allow you to measure the optimal settings and actual disk capabilities.

[Emad R]

@dyasny

It is very good tool, but if you can tell him to also support write speeds not just read

[Emad R]

@Emad-R said in Linux Storage Benchmark (IOPS):

@dyasny

It is very good tool, but if you can tell him to also support write speeds not just read

NVM I saw this -t option but

diskplorer.py: error: option -t: invalid choice: 'test' (choose from 'read', 'write', 'randwrite', 'randread')

However I dont get what IOPS in Windows tests and Linux tests, I am used to see IOPS like 100-200 for HDD and 40,000+ for SATA SSDs
~100,000 for NVME

https://www.samsung.com/semiconductor/minisite/ssd/product/consumer/850evo/

However it seems that maybe i dont know what I am looking for
RANDOM WRITE (4KB, QD1)
RANDOM WRITE (4KB, QD32)

I just want one base metric to give me good indicator

FYi this is VM on HDD

[scottalanmiller]

@Emad-R IOPS varies wildly by how it is tested. The question for your Windows tests would be... how was it tested? We know how the Linux was tested, it tells us. Knowing how the Windows was tested is the real need at this point.