Sure, sounds like a plan. I'll take a crack at it and let you know.
On Tue, Apr 29, 2008 at 12:18 PM, Brad Nicholes <[EMAIL PROTECTED]> wrote:
> >>> On 4/28/2008 at 8:26 PM, in message
> <[EMAIL PROTECTED]>, "JB Kim"
>
> <[EMAIL PROTECTED]> wrote:
> > Folks,
> >
> > I've made some changes to ganglia 3.0.7 gmond code to provide aggregated
> > disk IO
> > statistics for linux hosts. Since a given host can have one or more disks,
> > the
> > values from each individual disk are aggregated to a sum or to a max.
> >
> > It seems like a lot of folks are using a wrapper for iostat command to send
> > data
> > via gmetric. While this is also a useful approach, I thought it would be
> > nice
> > and convenient to have this reported from gmond, although the data
> > would be summarized
> > for an entire host. The code simply reads from either /proc/partitions
> > or /proc/diskstats, and
> > maintains the old and the new values for each disk to calculate the diff.
> >
> > These are the new metrics that were added:
> >
> >
> > Ganglia_metric_cb_define("io_readtot", io_readtot_func);
> > Ganglia_metric_cb_define("io_readkbtot", io_readkbtot_func);
> > Ganglia_metric_cb_define("io_writetot", io_writetot_func);
> > Ganglia_metric_cb_define("io_writekbtot", io_writekbtot_func);
> > Ganglia_metric_cb_define("io_svctmax", io_svctmax_func);
> > Ganglia_metric_cb_define("io_queuemax", io_queuemax_func);
> > Ganglia_metric_cb_define("io_busymax", io_busymax_func);
> >
> >
> > If you are interested, you can download and try out the source here:
> >
> > http://www.remnantone.com/pkgs/ganglia/ganglia-3.0.7_io.tar.gz
> >
> > and the README doc about the modifications I've made:
> >
> > http://www.remnantone.com/pkgs/ganglia/README
> >
> >
> > I have been running this modified gmond for sometime at work and it
> > worked out quite
> > nicely.
> >
> > I don't know how relevant this is considering the pending move to more
> > modular
> > framework for gmond core metrics in 3.1.x, but hopefully it will be
> > useful for folks still dependent on version 3.0.x. Having said that,
> > I'd be happy to help
> > integrate these metrics into 3.1.x framework as .so loadable modules,
> > if there's sufficient
> > interest.
> >
>
> I would suggest that you convert these metrics to modules first so that they
> can be included as part of the 3.1.x branch. Then if there is enough
> interest in backporting them, they can be backported to the 3.0.x branch.
>
> Brad
>
>
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