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, 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?
Regards,
Rui Ribeiro
Regards,