tracking down excessive system cpu utilization

[Emilio Casbas]

Romeo Theriault wrote:
> The "top" command will show you what process are using the most cpu 
> and memory amongst other things but what have you tried so far?
>
> Romeo

With the "vmstat" command you will show three kinds of CPU data:

    -overall utilization (you can identify if the CPU's speed is the 
bottleneck)
    - load averages. (impression of overall system performance)
    - per-process CPU consumption (you can identify specific process 
that are hogging resources)

%man vmstat

Thanks
Emilio C.

>
> On May 8, 2006, at 11:41 AM, Blackburn, Marvin wrote:
>
>> I have a single cpu, rhel es 3.0 u 5 system that shows excessive 'system
>> cpu" utilization.
>> I think, but, am not sure that the httpd process is causing this.  Can
>> anyone suggest a method to find out:
>> 1) what process is causing the system utilization to go up
>> 2) what system calls are being made overall and how many of each?
>>
>> Any help or suggestions on this would be appreciated.  This is a
>> production system, so rebooting or shutting down processes is not
>> desirable.
>>
>> ------------------
>> Marvin Blackburn
>> Systems Administrator
>> Glen Raven
>> "He's no failure.  He's not dead yet" --William Lloyd George
>>
>>
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