How to find out disk loading (iops) under Solaris?

Question

Solid State Drives

Good afternoon, I have a server with solaris, on which proprietary software is running, the essence of which is to work with a large number of small files, and so, under heavy load, everything was completely hung on the HDD, the SSD has become normal, but now it's running out again. I understand that it is the number of disk IOPS that matters in this case. How to monitor disk loading under Solaris in order to understand exactly how many iops are needed?

Answer 1

You can monitor it through iostat, here one of the important parameters is tps (iops) - transactions per second. How to do this is described here docs.oracle.com/cd/E23824_01/html/821-1451/spmonit... and here thegeekdiary.com/12-iostat-examples-for-solaris-pe...
But to understand when If the disk goes kirdyk, then you first need to test it and find out how many IOPS it can give on this system, for this use fio freecode.com/projects/fio or iometer. How to test with fio - www.linux.com/learn/tutorials/442451-inspecting-di...