How to Change Scheduling Parameters of a Timeshare Process

1. Become superuser.

2. Change the scheduling parameter of a running timeshare process.

   # priocntl -s -m userlimit [-p userpriority] -i idtype idlist

   -s	Lets you set the upper limit on the user priority range and change the current priority.
   -m userlimit	Specifies the maximum amount you can raise or lower your priority, when using the -p option.
   -p userpriority	Allows you to designate a priority.
   -i idtype idlist	Uses a combination of idtype and idlist to identify the process. The idtype specifies the type of ID, such as PID or UID.

3. Verify the process status by using the ps --ecl command.

   # ps -ecl | grep idlist

Example--Changing Scheduling Parameters of a Timeshare Process

The following example executes a command with a 500-millisecond time slice, a priority of 20 in the RT class, and a global priority of 120.

# priocntl -e -c RT -t 500 -p 20 myprog
# ps -ecl | grep myprog