Server crashes

Amr el-Saeed amr.elsaeed at
Tue Oct 16 10:56:52 CEST 2007

Dear Alan,

Thanks for your reply

first, i have about 200,000 users but there is some thin g in the 
configuration  that makes the users  connects and disconnects  in less 
than 15 minutes , and that makes that huge number of requests
(it's a temp. situation ) of-course.

second i tried the configuration you sent.
the server didn't start, so i guess it OS problem as you said but how to 
fix it ??
can you help me with that ??

thanks again

Alan DeKok wrote:
> Amr el-Saeed wrote:
>> Sorry
>> the config. was in the first email
>> I have this configuration
> .
> ... thread stuff.  There's usually a LOT more configuration than that.
>> start_servers = 20
>> max_servers = 400
>> min_spare_servers = 30
>> max_spare_servers = 60
>   I would suggest setting:
>   start_servers = 400
>   max_servers = 400
>   min_spare_servers = 0
>   max_spare_servers = 400
>   If the server doesn't start with those parameters, it's because your
> OS doesn't let you start that many threads.  In that case, go fix the OS.
>> i need 10,000  per second
>   I doubt that very much.  That's a billion packets per day.  Or, it's
> 500K users logged in all of the time, each of whom is online for only 10
> minutes.
>   There are large ISP's with 10+ million users who see only hundreds of
> requests per second.  You're talking about 100 times that, which is very
> unusual.
>   Please explain why you need such a HUGE number of requests.  It may
> help solve the problem you're seeing.  Do you have a billion users in
> your ISP?  Or do you have fewer users than that?  How many users do you
> expect to see online at once?  How many minutes are they online for at a
> time?
>   Also, most databases can't handle 10k writes per second, (some can't
> handle 10k *reads* per second).  So it's very doubtful that you'll be
> able to do anything with 10k packets/s, even if the RADIUS server itself
> can handle them.
>   I'm not aware of a single RADIUS installation on the planet that needs
> 10K packets per second.  And even the ones that handle hundreds to
> thousands of packets per second split those packets among multiple
> machines.  i.e. If you have a 10M users in your ISP, you can't afford to
> have everyone go offline because your ONLY RADIUS server died.  You will
> need 4-5 RADIUS servers for service stability, at least.
>   The result is that any one RADIUS machine will normally NEVER handle
> more than a few hundred packets per second.  If you need more than that,
> your network is designed wrong.
>   Alan DeKok.
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