Full Throttle Nagios

[Max]

On Tue, May 18, 2010 at 2:31 PM, Marcel <mitsuto at gmail.com> wrote:
> Hi list,
>
> Several times I'm asked about Nagios latency when the number of services go
> over a certain number.
>
> Is there any tweak to have nagios scale checkings more than it would after
> tweaking every configuration option for boosting performance?
>
> It seems that nagios don't do the best job at taking the hardware to its
> real limits.
>
> When I have more than, say, 10k checks, I start seen check latency rises and
> there just isn't anything that could be done, even distributed monitoring
> have the nagios.cmd write-lock bottleneck.

Can you post your nagios.cfg with comments and blank lines stripped
out?  please do strip out comments and blank lines so that it is not a
huge post :).

We did a small patch to remove a sleep time that nagios does between
non-runnable events, i did post it to the nagios developer's list, it
boosted our performance at higher polling density noticably.  Right
now we get about 2500 active host checks / 12500 active service checks
per nagios node with all checks completed every 5 minutes for services
and host checks running every 10 minutes.


- Max

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