[Xymon] Fwd: About CPU load (OPEN)

[Operaciones]

Thank you all for your advices, think on digest:

Should be test first with the default value, and still checking the 
loads then begin this change the new values right?


El 08/04/13 10:03, oyvind.bjorge at telenor.com escribió:
>
> To be able to estimate this it is good to understand what this load 
> value is showing.
>
> There is plenty of people that has explained this in a better way than 
> I’m able to (This is one example: 
> http://en.wikipedia.org/wiki/Load_(computing)) 
> <http://en.wikipedia.org/wiki/Load_%28computing%29%29>, but still I 
> will give you my very simplified understanding.
>
> The load is number of tasks in the runque. In my head, to utilize your 
> resources perfectly, the value 1 for single CPU would be good, since 
> than there should be minimal delay, but still there is always 
> something to do for the CPU. If the value are > 1 for a single cpu, 
> than there will be wait time for tasks to be done. This is not 
> necessary an issue, depending on what the machine is used for, and the 
> world is not perfect, so this will not always be the same. Therefor it 
> also is an average value we are monitoring. A long que for a short 
> time is normal and the reason we have ques. Problem is if the que over 
> time is longer than the cpu can process giving delay and degraded 
> performance. Again, what is acceptable for one machine is depending on 
> the tasks it shall do.
>
> *From:*xymon-bounces at xymon.com [mailto:xymon-bounces at xymon.com] *On 
> Behalf Of *Novosielski, Ryan
> *Sent:* 7. april 2013 23:27
> *To:* 'operaciones at corpresa.com'
> *Cc:* 'xymon at xymon.com'
> *Subject:* Re: [Xymon] Fwd: About CPU load
>
> Others may have some ideas. I think no, just set it too low (I use the 
> default value to start generally) and wait for it to get annoying and 
> raise it accordingly.
>
>
> *From*: Operaciones [mailto:operaciones at corpresa.com]
> *Sent*: Sunday, April 07, 2013 12:22 PM
> *To*: Novosielski, Ryan
> *Cc*: 'xymon at xymon.com' <xymon at xymon.com <mailto:xymon at xymon.com>>
> *Subject*: Re: [Xymon] Fwd: About CPU load
>
> Thank you Ryan, one ask, are there eny way for calc this?, or you 
> suggest taht the better way is testing in each server?
>
> El 07/04/13 18:16, Novosielski, Ryan escribió:
>
>     This default is a reasonably nice default for a single CPU system,
>     but this is really a parameter that is site-dependent. For
>     example, I have a 24 CPU compute server. A load of 5 is hardly
>     breaking a sweat. In some cases, high load doesn't even affect the
>     system and you wouldn't want to be notified until a normally
>     unreasonably high value. I'd suspect 10.0 15.0 for your system or
>     15.0 20.0 might not be a bad guess.
>
>     *From*: Operaciones [mailto:operaciones at corpresa.com]
>     *Sent*: Sunday, April 07, 2013 10:58 AM
>     *To*: Xymon List <xymon at xymon.com> <mailto:xymon at xymon.com>
>     *Subject*: [Xymon] Fwd: About CPU load
>
>     I forget, the default params that appear in this file are:
>
>     LOAD    5.0 10.0
>
>
>     Thank you, best regards.
>
>     -------- Mensaje original --------
>
>     *Asunto: *
>
>     	
>
>     About CPU load
>
>     *Fecha: *
>
>     	
>
>     Sun, 07 Apr 2013 16:56:32 +0200
>
>     *De: *
>
>     	
>
>     Operaciones <operaciones at corpresa.com>
>     <mailto:operaciones at corpresa.com>
>
>     *Para: *
>
>     	
>
>     xymon at xymon.com <mailto:xymon at xymon.com>
>
>
>
>     Hello,
>
>     I'm using xymon 4.3.5, my as is the follow:
>
>     Is correct the default params that appear on "analysis.cfg" for
>     chect the cpu load in case that the server have 4 cores (intel
>     xeon 1230)?, can i use this values for anyone CPU types?
>
>     Thank you, best regards.
>

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