anyone know what actually causes this? "FATAL! Server is too busyto process requests"

[Mitchell, Michael J]

Hi Tony,

I've run into this problem in the past. What version of freeRADIUS are
you running?

Like you I found that it appears more often when proxying requests to a
home server - I guess the reqeusts sit in the queue longer waiting for a
reply.

Alan was kind enough to supply a patch within hours for 1.1.0 and later.
It was bug #331.

However, we are still using 1.0.1, which couldn't take advantange of
that patch. I had to make some small bandaid changes to request_dequeue,
which reduced the change of this happening, at the expense of dropping
some requests. Let me know if you need those patches.


regards,
Mike

 

> -----Original Message-----
> From: 
> freeradius-users-bounces+michael.mitchell=team.telstra.com at lis
> ts.freeradius.org 
> [mailto:freeradius-users-bounces+michael.mitchell=team.telstra
> .com at lists.freeradius.org] On Behalf Of Tony Redstone
> Sent: Friday, 19 May 2006 12:03 AM
> To: freeradius-users at lists.freeradius.org
> Subject: anyone know what actually causes this? "FATAL! 
> Server is too busyto process requests"
> 
> we occasionally get these errors in our logs:
> Thu May 18 09:31:05 2006 : Error: FATAL!  Server is too busy 
> to process requests
> 
> and the server dies.  I've found the core in src/main/threads.c that
> spits out this message but it's not clear to me under what
> circumstances this would/should happen.  It happens on several boxes
> ranging from redhat 8.0 to fc4, some processes are talking to backend
> SQL databases some aren't (in fact, it's our plain radius
> passthrough/routing proxy servers with file only based config that
> seem to experience this issue the most).
> 
> does anyone know what really causes this and how to fix it?   we're
> serving around 50k DSL users with a nominal authentication load of
> around 200-300 requests per minute (this is for authentication only,
> accounting is handled by separate processes which don't experience the
> same problem).  peak load can run into several thousands per minute
> when recovering from planned maintenance on part of the DSL network.
> 
> Tony
> 
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