Rich,
this is actually where I see the future direction for gmond - having
all metrics configurable.
But if ysou do this you may end up with slightly different "gmonds".
We need to find a way to make those work together seamlessly.
Cheers
Martin
--- Richard Mohr <[EMAIL PROTECTED]> wrote:
> On Fri, 2007-03-02 at 07:40 -0800, Martin Knoblauch wrote:
>
> > My vision for the future would include a completely configurable
> set
> > of core metrics for "gmond". But in a way where different gmonds
> still
> > can work together in some meaningfull way.
> >
> > For example we have to rework the metrics array mechanism in
> > protocol.x to be much more flexibel. Something that might introduce
> > incompatibilities to 3.0.x.
>
> Is there any reason why most of the sutff in protocol.x can't be
> ditched
> in favor of treating every metric like a "user defined" metric? In
> my
> mind, the proper thing to do is to have gmond operate in much the
> same
> way that gmetric does.
>
> The gmetric code just parses the command line to determine the
> metric's
> name, type, slope, etc. The gmond.conf file could maybe support some
> syntax like this:
>
> metric {
> name = "cpu_idle"
> type = "float"
> slope = "both"
> format = "%.1f"
> value_threshold = "5.0"
> }
>
> Essentially this just moves the ganglia_25_metric_array from
> protocol.x
> into gmond.conf.
>
> But probably a better way would be to change the type of value used
> by
> the functions that collect the metrics. Instead of having them
> return
> g_val_t (which is nothing more than a union of all possible value
> types), they could return something a bit more complex. For example,
> just take struct Ganglia_25metric and replace "int key;" with
> "g_val_t
> value;" Each metric is now responsible for reporting info about
> itself,
> and gmond doesn't have to care about those details.
>
> Or maybe I'm just naive, and I don't fully understand some of the XDR
> related details....
>
> --
> Rick Mohr
> Systems Developer
> Ohio Supercomputer Center
>
>
>
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------------------------------------------------------
Martin Knoblauch
email: k n o b i AT knobisoft DOT de
www: http://www.knobisoft.de
