Thanks all for the generous contributions. I have certain ideas as well as
questions running at the back of my mind. I will have a go at Ganglia and then
return back for help if things do not look good.
Thanks,
Neel
On Fri, 01 Apr 2011 23:42:18 +0530 Bernard Li <bern...@vanhpc.org> wrote
>Hi Alex:
>
> On Fri, Apr 1, 2011 at 9:02 AM, Alex Dean <a...@crackpot.org> wrote:
>
> > I've implemented something like this myself, and I've always thought
it was a hassle. I noticed that rrdcreate seems to allow creation of rrd file
which accept an absolute value but actually store a rate of change (derived
from current value, previous value, and time delta).
> >
> > http://oss.oetiker.ch/rrdtool/doc/rrdcreate.en.html
> >
> > Look for the 'DST' section, and the 'COUNTER' type.
> >
> > Wonder if we could add some configuration syntax to gmetad.conf to
allow per-metric rrd creation options, and use COUNTER for a rate metric? I
see 'support for counters' at
http://sourceforge.net/apps/trac/ganglia/wiki/ganglia_wish-list. Is this the
same thing?
>
> If slope is set to positive, the RRD created will be of type COUNTER. See
here:
>
>
https://sourceforge.net/apps/trac/ganglia/wiki/ganglia_gmond_python_modules#defmetric_initparams:
>
> (the documentation is for gmond Python modules, but also applies to
gmetric)
>
> Cheers,
>
> Bernard
>
>
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