Nice the process on user level

UNIX for Advanced & Expert Users
1

Hi there,
I was wandering, if it is possible to nice set of process on user level.
Say, I have user1,user2
if user1 spawns 12 process and user2 spwans 15 process, Is there a way can I change the priority of any process started by user1 to 5 and viz-a-viz user2 to 20

Thanks in advance

2

You can change the nice level of a running process with 'renice', see 'man renice'.

You can only increase the nice level, and only for programs you own.

The superuser can set any process to any priority.

3

Hi,
thankx, so it can be done only for the running process . If I want for ANY process by a user it cannot be done right ?

4

I had assumed you already knew about the program for launching a process with a reduced priority since you were already using the term 'nice'. That's what the program for that is called -- 'nice'.

Nice one process, and it's children will also run at that priority level.