Weird issue - threads bottleneck in post-proxy section

Alan DeKok aland at
Tue Mar 3 14:38:28 CET 2015

On Mar 3, 2015, at 6:00 AM, RESTOUX, Loïc <loic.restoux at> wrote:
> Another thoughts about this: a network analysis seems to show that the bottleneck is not in post-proxy handling, but upstream. We know that radperf is sending as much requests as we told him (with -p 500 argument), but the rate of outgoing  proxied requests is far lower.

  Which would seem to be the problem then.

> So, is it possible that FreeRadius slows down the proxied requests sent to the remote radius, for instance in order to be sure to have always enough available threads to deal with the responses ?

  No.  It sends packets as fast as it can.

> Note that our max_outstanding parameter is set to 4096. Should we care of other parameters in the proxy section ?

  The default configuration should work.

  I have no idea how a module running in post-proxy can cause *outgoing* packets to slow down.

  Alan DeKok.

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