[xtradius] xtradius performance issues

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Author: Bert Goodman
Date:  
To: xtradius
Subject: [xtradius] xtradius performance issues

I work for a medium sized ISP and we are currently using xtradius to
handle auth requests for dialup users and highspeed users. Everything
works fine for normal usage but we experiance a problem when we need to
reset a switch and all of the currently active high speed users need to
authenticate all at once. I think there are about 100 highspeed customers
plus the normal dailup user load which is about 15 - 20 per minute. When
the 100 highspeed users all try to authenticate at the same time the
radius server craps out and all authentication stops. When I look through
the logs I can't even tell what's going on. Here is a clip:

Fri Dec 3 15:49:47 2004: Error: Killing unresponsive child pid 19769
Fri Dec 3 15:49:47 2004: Error: Killing unresponsive child pid 19773
Fri Dec 3 15:49:47 2004: Error: Killing unresponsive child pid 19775
Fri Dec 3 15:49:47 2004: Error: Killing unresponsive child pid 19777
Fri Dec 3 15:49:47 2004: Error: Killing unresponsive child pid 19782
Fri Dec 3 15:49:47 2004: Error: Killing unresponsive child pid 19784
Fri Dec 3 15:49:47 2004: Error: Killing unresponsive child pid 19786
Fri Dec 3 15:49:47 2004: Error: Killing unresponsive child pid 19791
Fri Dec 3 15:49:47 2004: Proxy: Unrecognized proxy reply from server
xxxxxx.xxxxxxxxx.xxx - ID 138
Fri Dec 3 15:49:47 2004: Proxy: Unrecognized proxy reply from server
xxxxxx.xxxxxxxxx.xxx - ID 139
Fri Dec 3 15:49:47 2004: Proxy: Unrecognized proxy reply from server
ogtisp.osogrande.com - ID 144
Fri Dec 3 15:49:47 2004: Proxy: Unrecognized proxy reply from server
xxxxxx.xxxxxxxxx.xxx - ID 145
Fri Dec 3 15:49:47 2004: Info: CHILD: exit.
Fri Dec 3 15:49:47 2004: Info: CHILD: exit.
Fri Dec 3 15:49:47 2004: Info: CHILD: exit.
Fri Dec 3 15:49:47 2004: Info: CHILD: exit.
Fri Dec 3 15:49:47 2004: Info: CHILD: exit.
Fri Dec 3 15:49:47 2004: Info: CHILD: exit.
Fri Dec 3 15:49:47 2004: Info: CHILD: exit.
Fri Dec 3 15:49:47 2004: Info: CHILD: exit.

This server proxies off auth requests to another server that is dropping
duplicate auth request like it's going out of style and eventually starts
Killing usresponisve child processes.

What can I do to enhance the performance of authentication?

-- 
Bert Goodman
----------------------------
-     System Engineer      -
- Oso Grande Technologies  -
- bgoodman@???   -
----------------------------
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