[collectd] bug with process plugin?

Łukasz Mierzwa prymitive at prymitive.com
Thu Oct 25 11:50:12 CEST 2007

Thursday 25 of October 2007 07:38:55 napisałeś(-łaś):
> Hi Łukasz,
> On Thu, Oct 25, 2007 at 01:12:58AM +0200, Łukasz Mierzwa wrote:
> > I got problem with process plugin, I configured it to collect
> > statistics for a given proces and the problem is that when the process
> > is using 100% cpu for longer period graphs are not showing it, there
> > is only system cpu usage line but no users line (system is about 10%).
> > rrd show N/A in cpu user collumn.
> what system are you using? There's a limit in the `ps_cputime' RRD files
> of 1000000 microseconds per second, which ``ought to be enough for
> anybody''.. I assume you're using a system with more than one CPU and
> the program you want to collect statistics of uses multiple threas.. In
> this scenario I could see the program using more then one second per
> second of the CPU..
> What you should try is raising the upper limit or disabling it
> altogether, using a command like this:
>  $ rrdtool tune $FILE -a user:10000000 -a syst:10000000
> (You should change 10000000 to some value which is greater than 1000000,
> ideally one million multiplied by the number of CPUs in your system.
> $FILE must be replaced with the appropriate ps_cputime.rrd-file, of
> course.)
> Regards,
> -octo

This is probably it, we are using dual and quad core machines and there is 
from 40 to 80 instances of this process. I'm currently sick so I can't test 
it, is there a way to change this in config file?

Łukasz Mierzwa

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