topic Re: what is nice %? in Operating System - HP-UX

what is nice %?

danny_28 — Wed, 11 Sep 2002 22:22:29 GMT

Hi.

top command.

Cpu states:
CPU LOAD USER NICE SYS IDLE BLOCK SWAIT INTR SSYS
0 0.37 14.8% 0.0% 0.6% 84.6% 0.0% 0.0% 0.0% 0.0%
1 0.37 3.2% 0.4% 3.0% 93.5% 0.0% 0.0% 0.0% 0.0%

USER+NICE+SYS+IDLE = 100%

what is nice %???

Thanks for your help.

Re: what is nice %?

Jeff Schussele — Wed, 11 Sep 2002 23:23:10 GMT

Hi Danny,

Nice is a term for a process priority change. Most often the lowering of priority but sometimes an increase.
The nice value in top is the CPU % of time spent with processes that have been shifted from their default priority.
Processe priority can be altered by the owner of the proc, root or most frequently the OS itself.

If you run a command in the background using "&" you lower the default nice value of the process by 4. The thing to remember is the higher the nice number - the lower the priority.

Default nice value is 20. The possible values are 1 <-> 40.

HTH,
Jeff

Re: what is nice %?

Ashwani Kashyap — Wed, 11 Sep 2002 23:27:08 GMT

nice depicts the priority of a process . The higher the nice value lower is the priority .
You can start a process to run at a certain priority using nice .
You can change the priority of a running process using renice .