high latency

[Daniel Wittenberg]

I did some testing today with epn on and off and it didn't seem to make
any difference in our latency times.  Not overly scientific though, but
looked about the same running few hours each way.

Dan

-----Original Message-----
From: Max Schubert [mailto:maxs at webwizarddesign.com] 
Sent: Friday, December 03, 2010 7:03 AM
To: Andreas Ericsson; Nagios Users List
Subject: Re: [Nagios-users] high latency

Latency increases much more quickly for us without epn as execution
times are noticably longer per check.

We use rhel 5.x, so the perl is 5.8.8.

We have semi dailoy updates to our pollers and with epn that means
cold restarts - memory leaks have not been noticable given that
scenrio, but on test hosts or hosts where we are doing burn ins it is
negligable enough that we can go for 2-3 days with no memory issues -
we always hit service latency thresholds first.

7 seconds is in general where we have to force a restart of our
pollers to prevent metric collection and snmp delta calculation
issues.

Max

On 12/3/10, Andreas Ericsson <ae at op5.se> wrote:
> On 12/03/2010 12:46 PM, Max Schubert wrote:
>> I find it interesting that a number of users get performance
>> improvements with embedded perl off - we lose 20-40% polling capacity
>> perl poller with it off.
>>
>
> How do you mean that you're losing capacity? Does latency start to
creep
> upwards or is load increasing?
>
> Out of interest; How much memory does epn leak nowadays, and which
perl
> version is it compiled against?
>
> --
> Andreas Ericsson                   andreas.ericsson at op5.se
> OP5 AB                             www.op5.se
> Tel: +46 8-230225                  Fax: +46 8-230231
>
> Considering the successes of the wars on alcohol, poverty, drugs and
> terror, I think we should give some serious thought to declaring war
> on peace.
>

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