[Freeswitch-users] Mod_limit stuck when hitting limit value

Fri Mar 13 09:17:46 PDT 2009

Hello,

Thank you for your help.

limit,Limit,<realm> <id> [<max> [number [dialplan [context]]]]
limit_hash,Limit (hash),<realm> <id> [<max>[/interval]] [number 
[dialplan [context]]]

I diged into mod_limit deeplier and as far as I understand, limit and 
limit_hash can be used for the same thing:
 limiting concurrent calls. please correct me, if I'm wrong...

but limit_hash has another feature /interval this is that make the rate 
limitation you mentioned.

Our dialplan is good that is out of question. I see hangup in console.
we do <action application="hangup" data="BEARERCAPABILITY_NOTAVAIL"/>

I tested both of them with sipp and I wasn't able to reproduce the problem

r12581 did fix the case when limit is called more times, right?

Thanks,
Tamas

rod írta:
> Hello,
>
> I'm now running r12590, the pbm was still there, but this was because of 
> a broken dialplan.
>
> I'm using this for exceeded limit:
>  <extension name="TOO_MANY_CALLS">
>         <condition field="destination_number" expression="^limit_exceeded$">
>           <action application="respond" data="503"/>
>           <action application="hangup"/>
>         </condition>
>     </extension>
>
> but this extension was at the end of my dialplan and I matched an other 
> extension before reaching the limit extension.
> What was odd was that in ngrep I saw FS sending a 503, I will 
> investigate on this.
>
> I will rerun long term test and let you know if all is ok, so I have to 
> do for a previous mail related to ghost sessions in CLI.
>
> @Tamas:
> I just give a try to limit_hash, and didn't make many tests with it. 
> It's on my todo list. Limit_hash is not a better choice than limit, 
> their usage are different:
>     - limit_hash is a good way to rate limit a specific gateway for 
> example so that your switch won't be flooded by a misconfigured peer gw
>     - limit is for limiting concurrent call to an extension/gateway, eg 
> you have a peer that provides you with 30channels and you want to allow 
> 15 channels for mobile (PLMN) and 15 for PSTN without relying
>
> If you still have pbm with limit and svn, pay attention to you dialplan :p
>
> @Mathieu
> I hope you didn't work on a virtual pbm, cause it seems to be a dialplan 
> misconfiguration. I'll let you know if I still have pbm. Thanks for your 
> help.
>
> regards.
> rod
>
> Tamas Cseke wrote:
>   
>> Hello,
>>
>> we had the same problem. we couldn't test r12581 for sure yet, but we will.
>> This fix is only for the limit (db version), right?
>> Would be limit_hash a better choice to increase performance anyway?
>> Rod, do yoo have maybe experiences with limit_hash with your sipp?
>>
>> Thanks in advance,
>> Tamas
>>
>>
>> Mathieu Rene írta:
>>   
>>     
>>> Were you doing transfers (action="transfer" in the dialplan) ?
>>>
>>> If yes, retry with revision 12581, and open a JIRA if it still is an  
>>> issue (also include a full debug log (delete your freeswitch.log file  
>>> before doing your test and attach it after) in your JIRA)
>>>
>>> Math
>>>
>>> On 12-Mar-09, at 10:12 AM, rod wrote:
>>>
>>>   
>>>     
>>>       
>>>> Hi list,
>>>>
>>>> I'm testing mod_limit like this:
>>>>        <action application="set" data="max_calls=60"/>
>>>>        <action application="set" data="GW_IP=10.10.20.100"/>
>>>>        <action application="limit" data="${AREA} ${GW_IP} $ 
>>>> {max_calls}"/>
>>>>
>>>> where AREA could be any value like: US/EUROPE/AFRICA... that has been
>>>> set for the call
>>>>
>>>> then I use sipp for load testing with 4 cps and max 65 calls so that I
>>>> will be limited by the limit of 60 in the dialplan.
>>>>
>>>> I use "limit_usage EUROPE 10.10.20.100" in cli and I see the limit  
>>>> value
>>>> growing up to 60.
>>>>
>>>> Sipp still tries to establish new call (up to 65 calls) at 4cps and  
>>>> for
>>>> each new cps in excess, FS sends a 503.
>>>> I wait for 10 seconds and stop sipp, but the limit value is never
>>>> decreasing even when there is no more channels used (show channels),  
>>>> the
>>>> limit value is stuck to 60.
>>>>
>>>>
>>>> If I limit Sipp to 55 calls (below the limit value), the limit value
>>>> increase and decrease depending on load, and the pbm doesn't appear.
>>>>
>>>> Does anybody is using mod_limit and have encountered the same pbm.
>>>>
>>>> I'm using latest svn: 12580.
>>>>
>>>> regards,
>>>> rod
>>>>
>>>>
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