High check latency with nagios
mshirley at ysi.com
mshirley at ysi.com
Mon May 24 21:41:53 CEST 2004
Sorry but that sounds like an incredibly large number of checks and hosts
to be running on a single machine. There's no wonder you're having such
problems. Unfortunatly this may be purley design and the reason that
clustering is a possiblility now. Perhaps using multiple boxes (even slow
ones) spread out with a central server doing data collection would be a
better alternative. Also, just because you have 2 processors and smp
enabled in the kernel doesn't mean nagios was written with proper threading
in mind (which defeats the purpose of dual processors).
Mark Shirley
IT Helpdesk
YSI Incorporated
|---------+---------------------------------------->
| | marino.simons at acerta.be |
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| | 05/24/2004 02:59 AM |
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>---------------------------------------------------------------------------------------------------------------|
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| To: nagios-users at lists.sourceforge.net |
| cc: |
| Subject: [Nagios-users] High check latency with nagios |
>---------------------------------------------------------------------------------------------------------------|
Hi All,
We are setting up nagios to monitor our infrastructure, and we ran into a
few problems. Most of them I"ve been able to solve, thanks to reading the
mailinglist. But the latest problem is a persistent one.
I'm running nagios on Suse Enterprise server 9, with kernel 2.6.5 on a dual
2.4 ghz intel Xeon server with hyperthreading enabled, the system has 2GB
ram. We recompiled the kernel with SMP-support, en it detects 4 cpu's..
In nagios we defined 405 servers, and we do 6855 active checks, and 17
passive checks. And we have an extremely bad performance.
At the tactical overview I see the following information: check latency:
4468.402 sec. It takes nagios about 1,5 hour to see a status change.
Needless to say that this is not acceptable.
Anyway I am looking for some hints, does anybode have an idea on what
causes this behavior?
Thanks in advance!!
Marino
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