status.cgi very high cpu usage

[Marc Powell]

> -----Original Message-----
> From: Steve Kieu [mailto:msh.computing at gmail.com]
> Sent: Tuesday, February 19, 2008 2:32 PM
> To: Marc Powell
> Cc: nagios-users at lists.sourceforge.net
> Subject: Re: [Nagios-users] status.cgi very high cpu usage
> 
> 	>
> 	> Many of the "Monitoring" reports don't work well at volume,
I've
> been
> 	> asking users to only use "Unhandled" reports.  You may get
better
> 	> response in Mozilla, but 'status.cgi' can kill Internet
Explorer
> 	> because of how it's loading everything in one large list.
> 
> 
> 	This is a browser rendering issue, nothing to do with the
nagios'
> speed
> 	at reading and parsing its status file. To get the html to
display
> 	status for all 3800 of my services takes under 1.5 seconds --
> 
> 
> 
> 
> In my case it is not the browser issue. The problem is that status,cgi
> does not return data rather than the data it generates is so big.
> 

4.4M of data in 1.39s --

[nagios at noctools nagios]$ export REQUEST_METHOD=GET; export
QUERY_STRING="host=all"; export REMOTE_USER="mpowell";
[nagios at noctools nagios]$ time ./sbin/status.cgi >foo

real    0m1.390s
user    0m1.300s
sys     0m0.090s
[nagios at noctools nagios]$ du -sh foo
4.4M    foo

> And status.cgi hog cpu time at the monitoring host (not the desktop
> viewing using a browser)
> 
> I guess there are something wrong with status.cgi and even the
extinfo.cgi
> take considerable amount of cpu as well

What status view specifically is the issue for you? What version of
nagios? Unless you're still using nagios-1.x, my gut feeling is that
there is something outside of nagios causing the issue (i.e. disk IO,
memory pressure, etc). Nagios-2 should be able to easily handle the
status data for 650 services. That was an area of significant focus and
improvement with the current version.

--
Marc

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