Measure CPU usage on Unix

[JtheRipper]

Hello,

I want to find out how the cpu's on my server are being utilized. I have 6 cpu's on one server, but am quite sure not all of them are being used. Is there a way/tool in unix that gives a nice breakdown of how each cpu is being used?

Thanks,
Jaco

 

[predamarcel]

what unix falvor do you have?
usually exist `top' programm

PM

 

[JtheRipper]

We are using Sun Solaris 8.

When I do a top, it does not really give me the info I need.

I want something like the following:

cpu1 20% busy
cpu2 100% busy
cpu3 0% busy

etc etc.

 

[predamarcel]

try `mpstat'
I think it's enough.

look for : usr sys and idl columns
PM

 

[JtheRipper]

Thanks for all the quick response, it looks like mpstat will do the trick!

 

[jimbopalmer]

you may wish to look at sar - q as well, it answers the opposite question

the second column is the percent of time a job had to wait because all CPUs were in use

the first column is the average number of jobs waiting for a CPU when at least 1 was waiting.

sar -q can show you the times of day when you do not have 'enough' CPUs, so you can avoid scheduling jobs then

I tried to remain child-like, all I acheived was childish.