Huge Service Latencies
Eli Stair
estair at ilm.com
Mon Dec 5 23:31:46 CET 2005
Just for comparison, I'm having a very similar issue. Currently it's
better, but latency last week was around the same area. I'm running
with the perlcache, most checks are quick SNMP gets. System is a dual
Opteron 246, 4GB RAM and currently doing nothing but this.
Check Execution Time: 0.02 sec 30.02 sec 6.020 sec
Check Latency: 0.09 sec 79.02 sec 69.122 sec
Percent State Change: 0.00% 15.86% 0.03%
/eli
PS - I'm moving the SNMP checks to Cacti, and pulling them with
check_rrd_data.pl due to the huge delay (and load) in the perl wrapper
to snmpwalk.
Hugo van der Kooij wrote:
> On Mon, 5 Dec 2005, Blake Krone wrote:
>
>
>>Service Check Execution Time: 0.10 / 10.04 / 2.175 sec
>>Service Check Latency: 21.25 / 483.37 / 224.970 sec
>>Host Check Execution Time: 0.06 / 10.70 / 4.307 sec
>>Host Check Latency: 0.00 / 529.15 / 5.137 sec
>># Active Host / Service Checks: 103 / 236
>># Passive Host / Service Checks: 0 / 1
>>
>>Machine is a P3 733mhz with 128mb ram running 2.6.11-gentoo-r3 kernel and
>>Nagios 2.03b
>
>
> A bare website with 128MB is not too generous. Add nagios to it and it
> becomes cramped. And you must run CGI scripts, check scripts and the lot.
> I would say you're running out of RAM.
>
> You can use tools like top, vmstat, free, .... to check your machine.
>
> Hugo.
>
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