ionice - set or get process I/O scheduling class and priority

syntax $ ionice -c <scheduling class> -n <priority value> <options><command>

To set process with PID 89 as an idle I/O process $ ionice -c 3 -p 89

To run bash program with highest priority. $ ionice -c 2 -n 0 bash

To Print the class and priority of the processes with PID 89 and 91. $ ionice -p 89 91 $ ionice -p <PID1> <PID2>

regards, T.Dhanasekar