Re: [Nagios-users] Rép. : RE: [Nagios-users]Is there a way to check the cpu %?

[Marcel Mitsuto Fucatu Sugano]

On Fri, 2006-05-05 at 16:18 +0200, Thibault Genessay wrote:
> Serveur-Faucon Surveillance wrote:
> > Unfortunatly, check_load only show the load and not the cpu utilisation, the equivalent of typing "w" in shell. What I am looking for is more something like "top". See below I have copy the result of "top".
> >
> > load = number of tasks in the queue and running  (average)
> > cpu utilisation = % of cpu in use.
> >
> > Here is the result of top.
> > --- top ---
> > 09:48:53  up 310 days, 17:31,  1 user,  load average: 0.76, 0.51, 0.52
> > 65 processes: 58 sleeping, 7 running, 0 zombie, 0 stopped
> > CPU0 states:  48.0% user   4.0% system    0.0% nice   0.0% iowait  46.0% idle
> > CPU1 states:  48.0% user   0.1% system    0.0% nice   0.0% iowait  50.0% idle
> >   
> You can get this info with
> top -b -n 1
> Then you can awk, grep or pythonize the output to get whatever you need
> 
> However, I do not recommend this method as it is both slow and heavy in 
> resources usage. Furthermore, those CPU loads are instantaneous values 
> that represent only 1 second (or any delay top uses to compute those 
> numbers), and thus can be aberrant regarding what the CPU has during all 
> the time it was not checked for; i.e. if your check_interval is 5 
> minutes you should not take a random, 1 second long sample in a 5 min 
> period but an average value computed over the 5 minutes.
> > You can get the first line of infos with check_load and check_uptime (contrib)
> > The second with check_proc
> >
> > But currently I don't see any way of getter the other lines.

sysstat package, using sar command, solves the issue.

HTH,
Marcel

> >   
> Have a look check_snmp_load.pl and its *netsc *option for the -T 
> argument (see http://www.manubulon.com/nagios/snmp_load.html)
> This might be what you are looking for.
> 


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