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Yes, it's not been much of a mystery that it's not multi-threaded, because =
as he points out usually your checks and other support procs are using the =
other processors so it normally works out ok. Maybe not ideal, but it norm=
ally works out ok.
Dan
From: Rodney Ramos [mailto:rodneyra@gmail.com]
Sent: Wednesday, August 24, 2011 9:32 AM
To: Nagios Developers List
Subject: Re: [Nagios-devel] Nagios and Gearman - huge environment performan=
ce problem
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 th=
e top of "top" are an average across all CPUs. As previously mooted, Nagio=
s 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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This post was automatically imported from historical nagios-devel mailing list archives
Original poster: odney Ramos [mailto:rodneyra@gmail.com