capturing radius performance metrics

Munroe Sollog mus3 at
Mon Jan 20 15:11:43 CET 2020

For those of you using radsniff for stats collection, has anyone had any
luck using the telgraf collectd plugin?  radsniff seems to work fine to
collectd but when I plumb it to telegraf, telegraf complains about invalid
packet length.  I have a bug open for telegraf, but I was wondering if
anyone else has the same issue.

On Fri, Jan 3, 2020 at 6:05 PM Nathan Ward <lists+freeradius at>

> > On 4/01/2020, at 10:15 AM, Munroe Sollog <mus3 at> wrote:
> >
> > I would like to monitor the ongoing real-world performance of my
> freeradius
> > server.  In this case, I'm defining performance as time between receiving
> > request and sending answer.  I have used radsniff and radclient to do
> some
> > benchmarking, but neither really seem like a sustainable or appropriate
> > solution for long-term data collection in a production environment.
> You can have radsniff write to a collectd socket. I have this in many many
> production servers, it works very well.
> Collectd can write out many formats, including to other collection
> services over a network.
> Of course, it shows packet rate etc. stats rather than radius process
> internal stats, but it gets you most of the way there.
> --
> Nathan Ward
> -
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Munroe Sollog
Senior Network Engineer
munroe at

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