[rrd-developers] Integrating rrdcached with Ganglia

[Bernard Li]

Dear all:

For those who are interested,I have written a Wiki page documenting
how to integrate rrdcached with Ganglia 3.1.x:

http://ganglia.wiki.sourceforge.net/rrdcached_integration

Comments/feedbacks welcome.

Thanks,

Bernard

On Wed, Sep 24, 2008 at 3:50 PM, Bernard Li <bernard at vanhpc.org> wrote:
> Dear RRDTool and Ganglia developers:
>
> For the last few days I have been working on integrating rrdcached
> with Ganglia and the preliminary results are pretty promising.
>
> On my benchmark server running gmetad, without rrdcached the load
> would get way up there making the server unusable (due to high I/O
> wait).  With rrdcached enabled, the load barely hit 2 and I/O wait is
> low.
>
> I will post some more data later (maybe summary of `sar` output).
>
> For Ganglia, both gmetad and apache processes need to access the
> rrdcached socket, so I had the socket owned by nobody chgrp it to
> apache (also making it group-writable).
>
> If anybody is interested in testing this on EL4, I could post my RPMs.
>  Code modification to Ganglia is pretty trivial.
>
> I look forward to the official release of rrdcached as part of an
> upcoming rrdtool release!
>
> Special thanks to Florian, Kevin and Tobias for their hard work in
> putting this together!
>
> Cheers,
>
> Bernard
>