check_load --- divide by number of cpus?
Mike Emigh
maemigh at gmail.com
Thu May 8 17:24:23 CEST 2008
On Thu, May 8, 2008 at 10:49 AM, Terry <td3201 at gmail.com> wrote:
> This is the logic I was looking for. This makes sense. Apache with
> prefork is not multithreaded and this type of logic is great. But do
> you shoot yourself in the foot for multithreaded processes?
>
What we do in our setup is monitor CPU utilization (average across all
cores) in conjunction with load (and of course graph both). You could
even have a separate check to monitor the CPU utilization of the
busiest CPU. You could adjust your load thresholds in accordance with
the number of processors. Then when/if your load hits a threshold,
you can check the CPU utilization graph to see how it compares.
I would think that the load average would be easier to interpret if
the applications running on the server are multithreaded (and load is
distributed evenly across the cores).
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