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Thank you Mark for unveiling the idle CPU mystery! This proves that Nagios
uses just one core. It=B4s a big problem.

On Tue, Aug 23, 2011 at 6:48 PM, Mark Goldfinch wrote:

> ----- Original Message -----
>
> > From: "Rodney Ramos"
> > To: "Nagios Developers List"
> > Sent: Wednesday, 24 August, 2011 8:21:42 AM
> > Subject: Re: [Nagios-devel] Nagios and Gearman - huge environment
> > performance problem
> >
> > But, as Daniel said, there is one thing that I can=B4t understand. Why
> > my idle CPU is with 87%? It=B4s very weird. Is there something that
> > makes the performance better? A Nagios or Operation System
> > parameter?
>
> On this particular point, the overall system CPU statistics displayed at
> the top of "top" are an average across all CPUs. As previously mooted,
> Nagios core isn't multi-threaded, so it can only max a single core. 100%=
of
> 1/8 CPUs =3D=3D 12.5% hence why you're seeing 87.5% idle time, 7 of your =
cores
> are not stressed out.
>
> Thanks,
> Mark.
>
>
> -------------------------------------------------------------------------=
-----
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> The only unified storage solution that offers unified management
> Up to 160% more powerful than alternatives and 25% more efficient.
> Guaranteed. http://p.sf.net/sfu/emc-vnx-dev2dev
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>

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Thank you Mark for unveiling the idle CPU mystery! This proves that Nagios =
uses just one core. It=B4s a big problem.On Tue, Aug 23, 2011 at 6:48 PM, Mark Goldfinch <[email protected]=
m> wrote:
----- Original Message -----

> From: "Rodney Ramos" <[email protected]>
> To: "Nagios Developers List" <[email protected]>
> Sent: Wednesday, 24 August, 2011 8:21:42 AM
> Subject: Re: [Nagios-devel] Nagios and Gearman - huge environment
> performance problem
>
> But, as Daniel said, there is one thing that I=
can=B4t understand. Why
> my idle CPU is with 87%? It=B4s very weird. Is there something that
> makes the performance better? A Nagios or Operation System
> parameter?

On this particular point, the overall system CPU statistics displayed=
at the top of "top" are an average across all CPUs. =A0As previo=
usly mooted, Nagios core isn't multi-threaded, so it can only max a sin=
gle core. =A0100% of 1/8 CPUs =3D=3D 12.5% hence why you're seeing 87.5=
% idle time, 7 of your cores are not stressed out.


Thanks,
Mark.

---------------------------------------------------------------------------=
---
EMC VNX: the world's simplest storage, starting under $10K
The only unified storage solution that offers unified management
Up to 160% more powerful than alternatives and 25% more efficient.
Guaranteed. http://p.sf.net/sfu/emc-vnx-dev2dev
_________________________________________=
______
Nagios-devel mailing list
Nagios-devel@lis

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