CPU question

[Javier Ortiz Guajardo]

How can i know if my system is cpu trashing?

what trivial command (sar vmstat..etc) can i use to evaluate the cpu is working godd performance?

Thanks...

[John Meissner · Accepted solution]

top or glance plus should work

Perfview and measureware will let you see things in a visual graph

[James R. Ferguson]

Hi:

'uptime' and 'top' (and of course 'glance') provide tools to evaulate CPU utilization.

The load average summary offered by 'uptime' is important in that it summarizes the average depth of the run queue (jobs waiting for processor cycles).

Regards!

...JRF...

[Tim Sanko]

If you haven't installed Glance, it is available on the CD's for a trial period. It is invaluable.

Although top and uptime do give you a view, load glance and activate long enough to find out CPU and/or IO or tuning problem...

Tim

[Tim Sanko]

I would use the X based part of glance, gpm. I would then find my offending process.

When you find the offending process, one of the things that you look for in gpm is to look for forced context switches... and cpu switches.

Then use glance in the advisor mode to determine if is the real problem is a tunable metric...

Tim