14 Aug
2014
14 Aug
'14
7:49 p.m.
Hi list,
A quick question,
What is the best way to limit the rate of the kamailio,
Say I want it to process only 200 INVITEs per second
I know this can be done using ratelimit module, but what if I want to
change this rate dynamically? say, in an overload control scenario, I am
getting a recommended rate piggybacked in my replies, and I read it, then
how can I change the messge processing rate of kamailio in runtime inside
my script?
Is there a way to change the rate using ratelimit but inside script as
messages come?
The RPC function (rl.set_pipe) does it, but can I call it inside my script?
Thanks,
Alireza
15 Aug
15 Aug
1:38 a.m.
On 08/14/2014 12:49 PM, AliReza Khoshgoftar Monfared wrote:
Hi list,
A quick question,
What is the best way to limit the rate of the kamailio,
Say I want it to process only 200 INVITEs per second
I know this can be done using ratelimit module, but what if I want to
change this rate dynamically? say, in an overload control scenario, I am
getting a recommended rate piggybacked in my replies, and I read it,
then how can I change the messge processing rate of kamailio in runtime
inside my script?
Is there a way to change the rate using ratelimit but inside script as
messages come?
The RPC function (rl.set_pipe) does it, but can I call it inside my script?
There is presently no good means of accomplishing that except by
implementing your own rate-limiting mechanism. The easiest way to do
that is probably through the use of 'htable'. Sample a number of calls
per unit of time and then divide by the sampling period to get
approximate CPS.
The 'updateexpire' parameter to the definition of an htable was added to
make things like this easier:
http://kamailio.org/docs/modules/4.1.x/modules/htable.html#htable.p.htable
--
Alex Balashov - Principal
Evariste Systems LLC
Tel: +1-678-954-0670
Web: http://www.evaristesys.com/, http://www.alexbalashov.com/
Please be kind to the English language:
http://www.entrepreneur.com/article/232906
5:23 p.m.
Hello,
On 14/08/14 18:49, AliReza Khoshgoftar Monfared wrote:
Hi list,
A quick question,
What is the best way to limit the rate of the kamailio,
Say I want it to process only 200 INVITEs per second
I know this can be done using ratelimit module, but what if I want to
change this rate dynamically? say, in an overload control scenario, I
am getting a recommended rate piggybacked in my replies, and I read
it, then how can I change the messge processing rate of kamailio in
runtime inside my script?
Is there a way to change the rate using ratelimit but inside script as
messages come?
The RPC function (rl.set_pipe) does it, but can I call it inside my
script?
you can use exec module to execute an external command (kamctl ... or
kamcmd ...). Also, utils or some embedded interpreter can be used to
make http requests (to xmlrpc).
On the other hand, pipelimit (which is intended to be more dynamic), got
the option to define pipes dinammicaly. Adding support to change the
limit should be easy -- I will look into it if nobody else sends a patch
meanwhile (and could be better to add a feature request on tracker, not
to forget about it) -- however, it is only in devel version.
Cheers,
Daniel
--
Daniel-Constantin Mierla
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
Next Kamailio Advanced Trainings 2014 - http://www.asipto.com
Sep 22-25, Berlin, Germany ::: Oct 15-17, San Francisco, USA
9:45 p.m.
Thanks Daniel and Alex,
I will submit a request for it. It will definitely be a helpful addition as
it helps people implement various overload control mechanism where many of
them require tuning the rate. In the meantime I will do as Alex suggested
to use my own counters to keep track of messages and limit them properly.
Cheers,
Alireza
On Fri, Aug 15, 2014 at 10:23 AM, Daniel-Constantin Mierla <
miconda(a)gmail.com> wrote:
Hello,
On 14/08/14 18:49, AliReza Khoshgoftar Monfared wrote:
Hi list,
A quick question,
What is the best way to limit the rate of the kamailio,
Say I want it to process only 200 INVITEs per second
I know this can be done using ratelimit module, but what if I want to
change this rate dynamically? say, in an overload control scenario, I am
getting a recommended rate piggybacked in my replies, and I read it, then
how can I change the messge processing rate of kamailio in runtime inside
my script?
Is there a way to change the rate using ratelimit but inside script as
messages come?
The RPC function (rl.set_pipe) does it, but can I call it inside my
script?
you can use exec module to execute an external command (kamctl ... or
kamcmd ...). Also, utils or some embedded interpreter can be used to make
http requests (to xmlrpc).
On the other hand, pipelimit (which is intended to be more dynamic), got
the option to define pipes dinammicaly. Adding support to change the limit
should be easy -- I will look into it if nobody else sends a patch
meanwhile (and could be better to add a feature request on tracker, not to
forget about it) -- however, it is only in devel version.
Cheers,
Daniel
--
Daniel-Constantin Mierla
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
Next Kamailio Advanced Trainings 2014 - http://www.asipto.com
Sep 22-25, Berlin, Germany ::: Oct 15-17, San Francisco, USA
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3 comments
3 participants
participants (3)
-
Alex Balashov -
AliReza Khoshgoftar Monfared -
Daniel-Constantin Mierla