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.
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.
