There is no easy way to do this. 100-200 calls / seconds? that is just
crazy. You can use multiple machines to do load sharing.
Some suggestions,
1. write a script that listens to status ports that calculates calls per
second (ARQ/Setup received per second). Once a preset value is reached,
reject additional ARQs/SETUPs.
2. Modify source code to include a parameter that will handle this
3. coordinate with call center who is doing predictive dialling with the
rate of dialing per second your system can handle
just brainstorming here, dont know if any of this suggestions will work. :=)
good luck.
ian
bluce ree wrote:
Does anybody have anything to suggest as a solution to control the
rate of calls per second?
*/bluce ree <bluceree@xxxxxxxxx>/* wrote:
Thanks for the reply but completely blocking the customer isn't
what I want to do. I would like to control the rate of calls in
some manner that allows me to discard new connections when calls
per second exceed a certain rate or when a certain number of calls
are in queue that have not yet undergone translation or some other
means to control rate of call flow.
From: Muhammad Asif Ali <m@xxxxx>
* Re: Call slamming*
<http://sourceforge.net/mailarchive/message.php?msg_id=14202588>
2005-12-15 23:20
Hi Bluce I had the same problem and I was advised two options by a friend of mine : 1) Quick and dirty method is to block the IP in IPChains of your system, but that wont relieve the system fully as request would still be coming but now your system would be dropping the request from that IP. 2) Other method is to get that IP blocked @ gateway, that wud completely relieve ur system from that IP Hope it helps
*/bluce ree <bluceree@xxxxxxxxx>/* wrote:
Anyone have any thoughts or suggestions on how to limit the
rate of incoming calls per second?
I tried reducing the value of "ListenQueueLength" as far down
as 1 with no positive effect. Calls coming in continue to slow
the GK to almost a complete halt as the queue flushes at rates
of 100 - 200 calls per second. Faster CPU doesn't help (quad
opteron).
*/bluce ree <bluceree@xxxxxxxxx>/* wrote:
One more thing, I only want to slow the rate of calls per
second. I don't want to limit the total number of
concurrent calls.
*/bluce ree <bluceree@xxxxxxxxx>/* wrote:
We have a situation where a customer occasionally hits
our box with hundreds of calls per second and it
brings the gatekeeper down almost to a complete halt.
Is there any way to control the incoming rate of
calls? In the config file i see the following parameter:
ListenQueueLength=1024
If I reduce that number to, say, 50, would that help?
Would reducing that number cause any other issues I
should consider?
Is there another way I can limit the incoming
connection queue to prevent being slammed?
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