Hiya
I am not having much luck with large numbers of auth requests.
I am running freeRADIUS with mySQL v4 on a quad Xeon 2.4GHz system with 2GB of
RAM. The disk is a RAID 10 of SCSI 320MB/s drives and an Intel 64 bit RAID controller
(4 disks in total make the RAID group). Running Debian v3.0r0 with the 2.4.20 kernel.
So this server is NOT short of grunt. However, if I fire a list of 19000+
users in quick succession at the RADIUS server it quickly fills the 5-10 SQL
connections to the DB backend and begins rejecting all the requests with the odd one
authenticating.
If I increase the number of SQL connections to say 80 then more are
authenticated initially but at a VERY slow rate, and then after 400-500 have
successfully authenticated it begins to reject enmasse again.
The SQL tables are indexed, and there is NOTHING other than mysql and
freeRADIUS running on the system. When I flood the box with auth requests and have a
large number of mysql connections the load hits 47+!
I must have something wrong in the configs somewhere, could someone please
point me in the direction of possible causes for this severe performance hit?
Thanks
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Graeme Hinchliffe (BSc)
Core Internet Systems Designer
Zen Internet (http://www.zen.co.uk)
ICQ 3842605 (link)
Sales : 0870 6000 971
Fax : 0870 6000 972
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