High check latency with nagios

[marino.simons at acerta.be]

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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