Freeradius-Users Digest, Vol 112, Issue 1

Rui Ribeiro ruyrybeyro at
Fri Aug 1 12:50:10 CEST 2014

Hello Stefano,

2.12 is quite old, and is has several bugs. Why not update it to at least

As for problems, there is a know bug when using mschap in 2.1.12, that
often freeradius stops answering requests after a reload when rotating
logs. You have to edit /etc/logrotate.d/freeradius and change the reload
for a restart if that is your case.

Another probable source of cpu/ I/O load is radwtmp and similar files, as
they grow and are not rotated per the default configuration. I dont use
them, I rely on the (My)SQL data.

Hope these tips help you in some way. You are welcome to ask me any


> Message: 7
> Date: Fri, 1 Aug 2014 10:57:48 +0200
> From: Stefano PASCALI <stefano.pascali at>
> To: FreeRadius users mailing list
>         <freeradius-users at>
> Subject: CPU utilization
> Message-ID: <488B69B7-9992-4940-B9D0-04A1DD6CD698 at>
> Content-Type: text/plain; charset=us-ascii
> Hi FR folks,
> I got a strange cpu load on my FR installation. Sometimes CPU utilization
> rises to 100% and FR service doesn't respond anymore to the clients. I got
> two virtual servers enabled: default and inner-tunnel and their
> configurations are the provided ones by the FR installation.
> Configuration details in the following:
> OS: Ubuntu server 14.04
> Deamon: freeradius 2.1.12+dfsg-1.2ubuntu8 amd64
> 2 vcpu
> Users on freeradius MySQL (5.x) DB installed on a different virtual host
> on the same hosting server.
> Hosting server (Ubuntu server 14.04 + Xen 4.3) HP PL G5
> CPU: 2 x Intel(R) Xeon(R) CPU E7330 @ 2.40GHz - cpu cores 4; [total cores
> 2x4 = 8]
> RAM 16GiB
> Do you have any ideas to solve my issue?
> Hope someone help me.
> Regards
> Stefano
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