Performance - was Re: LDAP Groups to Freeradius and then Ruckus Wireless?

Chaigneau, Nicolas nicolas.chaigneau at
Tue Jun 10 14:48:13 CEST 2014

3500 authentications is what some setups have to handle in like 20 seconds :)

That said, databases are almost always the bottleneck when measuring capacity.

FreeRADIUS memory usage seem really negligible (at least when some dumb user does not add a memory leak... duh).
CPU usage can be quite intensive when handling heavy load. Still, that's not an issue, and it's laughably low compared to performance tests played on apache HTTP servers (for instance).

-----Message d'origine-----
De : at [ at] De la part de Arran Cudbard-Bell
Envoyé : mardi 10 juin 2014 13:19
À : FreeRadius users mailing list
Objet : Re: Performance - was Re: LDAP Groups to Freeradius and then Ruckus Wireless?

On 10 Jun 2014, at 11:46, Rui Ribeiro <ruyrybeyro at> wrote:

> Hi Arran,
> To be fair, I have read a lot of performance problems in FreeRadius, 
> and I have yet to see any. We have been running here for more than a 
> year now, Debian 7/FreeRadius from 2.1.12 to 2.2.5, MySQL, detail 
> files and AD authentication, roaming/proxying too, in a virtual 
> machine with 64 bits, 1GB RAM and 2 CPUs, 3500 daily EDUROAM users,

3500 users (over a day) is on the small side in terms of FreeRADIUS deployments. Your concurrent users are probably a quarter of that.

> and I have yet to see the CPU loads go up more than 0.05-0.10. Even when I have major events that bring down the wifi intra-structure, like yesterdays where a switch went crazy, I  hardly register an heavy load. 
> What are your mileage, guys?

Try authenticating 2 Million subscribers after a major BNG outage. That 15% will make a big difference.

The Eduroam community, whilst one of the most visible users of FreeRADIUS, probably only represents about 10% of the users authenticated daily using FreeRADIUS, possibly even less.


Arran Cudbard-Bell <a.cudbardb at> FreeRADIUS Development Team

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