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Re: Monitoring load average relative to number of CPUs

From: Martin Pala
Subject: Re: Monitoring load average relative to number of CPUs
Date: Thu, 10 Apr 2014 20:16:36 +0200

Hi Daniel,

the load average value is currently absolute only. The rule of thumb usually 
was that load average of 2 per CPU core is acceptable, which translates to 2 
runnable processes per CPU. Relative load average settings may be useful - load 
of 1 per each CPU would correspond to 100%, i.e. on 16 cores system load 16 = 
100%, to test for load corresponding to 32 on such system the value will be 
200%. The percentage would work regardless of CPU count (for example in the 
case of single CPU the load 100% will correspond to load average 1).

We can maybe add such option in the future.


On 10 Apr 2014, at 18:50, Daniel Levine <address@hidden> wrote:

> Hi all,
> Is it possible to have monit alert when load average exceeds the number of 
> CPUs, i.e. without having to set a specific number? This would be convenient 
> for virtual machines. The documentation seems a little vague on the subject 
> though.
> I did try setting load average as a percentage, but that resulted in a syntax 
> error.
> Thanks in advance!
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