Nagios Scalability Issues

Marc Powell marc at ena.com
Tue Jun 5 21:51:19 CEST 2007



> -----Original Message-----
> From: nagios-users-bounces at lists.sourceforge.net [mailto:nagios-users-
> bounces at lists.sourceforge.net] On Behalf Of Andrew Tjang
> Sent: Tuesday, June 05, 2007 2:29 PM
> To: nagios-users at lists.sourceforge.net
> Subject: Re: [Nagios-users] Nagios Scalability Issues
> 
> Thank you for your responses! My answers appear below.


> > Another not-so-random suggestion would be to try disabling
> notifications on a program-wide basis and see if there is a > change.
I
> assume that you've already set command_check_interval to -1.
> 
> > --
> > Marc
> 
> I have already set the command_check_interval to -1
> What does disabling notifications do? I still need to be able to see
> state changes on the gui.

It disables e-mail notififications. For every check result that changes
state, nagios needs to determine if someone should be notified. There's
quite a bit of processing related to that and I suspect that it happens
in a sequential as opposed to parallel fashion. I know that when I have
an outage situation I see the kind of results you do, with check result
processing held up a lot until I disable the notification logic. Once
that's done, the thousands of pending results are almost immediately
processed.

--
Marc

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