FreeRADIUS can't make progress under certain load

rihad rihad at
Mon Sep 12 08:22:02 CEST 2011

On 09/12/2011 01:14 AM, Alan Buxey wrote:
> Hi,
>> It's a working one. Just think of it: some of the new requests get
>> dropped because the server thinks it can't handle them right now: it has
> but the server can handle them - you jst need to fix your bottleneck.
> what is the bottleneck in your system? I'm going to guess its a database.
> it usually is. what is your database?  MySQL?  do you have indexes?
> do you clean up old junk?   I have FreeRADIUS with postgresQL and can happily
> do 10k auths/second
Yes, MySQL, indexed. The billing software itself ( is 
bulky and convoluted, written to be extremely inefficient. The box can 
do probably 30-50 req/s when a NAS reboots (judging by the logs). But I 
at least found a way how to easily let it crawl through. All I wanted 
was to find out how to drop new requests under heavy load. This will buy 
us a year or two.

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