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How to calculate maximum disk IOPS?

Operating system is CentOS 7. Which tools we can use?

I have used iobench, ioping, iostat and sysbench tools but not able to make definitive statement to conclude the maximum IOPS we can obtain from a disk.

Please suggest tools and commands.

AdminBee
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  • Found a similar article, if it helps: https://unix.stackexchange.com/questions/240651/how-to-find-the-max-io-a-physical-disk-can-support – Tech99 Feb 03 '20 at 11:56

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My try to understand "real-world" speeds and throughput is fio

Based on simple configuration file you can create different ".fio" files to test what best suits to your needs (take a look at the docs).

Just to add my scenario: I used it a lot in the past to find best disk/filesystem tuning for large backups performance (>4TB) with complex incremental/reverse incremental setup.