[Kamailio-Users] [Kamailio-Devel] Kamailio 1.4.2 : Weird Retransmission
Daniel-Constantin Mierla
miconda at gmail.com
Fri Dec 12 11:23:31 CET 2008
On 12/12/08 12:13, Aurelien Grimaud wrote:
> uname -a
> Linux testg5 2.6.25.14-108.fc9.i686 #1 SMP Mon Aug 4 14:08:11 EDT 2008
> i686 i686 i386 GNU/Linux
thanks, I just sent a new patch... let me know the results.
Cheers,
Daniel
>
>
> Daniel-Constantin Mierla a écrit :
>>
>>
>> On 12/12/08 11:36, Daniel-Constantin Mierla wrote:
>>> one question for you, is your system multi-processor?
>>>
>> actually, please give the specs of your system: number of cpu and
>> architecture, os, kernel, ...
>>
>> Cheers,
>> Daniel
>>
>>> Cheers,
>>> Daniel
>>>
>>> On 12/12/08 10:30, Aurelien Grimaud wrote:
>>>
>>>> Daniel-Constantin Mierla a écrit :
>>>>
>>>>> can you try this new patch? It adds a new debug messages for
>>>>> troubleshooting -- you have to revert the previous patch as this
>>>>> one includes it. you can send it to me without ngrep, maybe i can
>>>>> catch it.
>>>>>
>>>> First try, without ngrep or tcpdump.
>>>> BYE for CALL-ID=3-18225-127.0.0.1 is retransmitted.
>>>>
>>>> I'll send the sipp messages but timestamps it provides seems wrong
>>>> on messages sent.
>>>>
>>>> Aurelien
>>>>
>>>>> Thanks,
>>>>> Daniel
>>>>>
>>>>> On 12/11/08 18:22, Aurelien Grimaud wrote:
>>>>>
>>>>>> Well, it seems hard to reproduce with ngrep running ..
>>>>>> It seems like the timing is not the same anymore and ngrep slow
>>>>>> down the computer just enough for bug not to trigger.
>>>>>> I tried many times and the result is that when ngrep is not
>>>>>> running, the bug shows up, while wth ngrep it stay hidden.
>>>>>> I hope last log from sipp were enough.
>>>>>>
>>>>>> However, this retransmission should not disturb the remote user
>>>>>> and while nasty race should be handled, this is minor for me.
>>>>>> My real problem, concerns transaction module too and is more
>>>>>> troubling.
>>>>>> This is the one I related in
>>>>>> http://lists.kamailio.org/pipermail/users/2008-December/020882.html
>>>>>>
>>>>>> I use this timer triggering to fail over another end user and
>>>>>> implement serial forking.
>>>>>> If the timer triggers while it should not, I will initiate a
>>>>>> second call to another destination, which is wrong.
>>>>>>
>>>>>> Any idea on this one ?
>>>>>>
>>>>>> This is while trying to reproduce it that I found those weird
>>>>>> retransmission.
>>>>>> I'll try and trigger this initial bug again.
>>>>>>
>>>>>> Regards
>>>>>>
>>>>>> Aurelien
>>>>>>
>>>>>> Aurelien Grimaud a écrit :
>>>>>>
>>>>>>> Sure, meanwhile here are messages provided by sipp
>>>>>>> UAS side and UAC side.
>>>>>>> UAC contains only the 10 calls done
>>>>>>> UAS contains much more as I was trying to reproduce it with 1
>>>>>>> call at a time.
>>>>>>>
>>>>>>> Aurelien
>>>>>>>
>>>>>>> Daniel-Constantin Mierla a écrit :
>>>>>>>
>>>>>>>> Can you please make the test again and send along with the
>>>>>>>> debug messages the sip trace?
>>>>>>>>
>>>>>>>> ngrep -d any -qt -W byline port 5060
>>>>>>>>
>>>>>>>> I want to check the sip messages as well.
>>>>>>>>
>>>>>>>> Thank you,
>>>>>>>> Daniel
>>>>>>>>
>>>>>>>>
>>>>>>>> On 12/11/08 16:19, Aurelien Grimaud wrote:
>>>>>>>>
>>>>>>>>> Answer waiting for approval : logs too big !
>>>>>>>>>
>>>>>>>>> Here is a lighter one.
>>>>>>>>>
>>>>>>>>> My answer was
>>>>>>>>>
>>>>>>>>>> Thanks for the patch.
>>>>>>>>>>
>>>>>>>>>> With 1 call at a time, the bug does not trigger anymore.
>>>>>>>>>> However, with 2 calls at a time it was triggered again on BYE.
>>>>>>>>>> Attached log is result of my testing.
>>>>>>>>>> 1 sipp as uac make 10 calls with 2 simultaneous calls allowed.
>>>>>>>>>>
>>>>>>>>>> The call callid=7-22285-127.0.0.1 request resending of BYE
>>>>>>>>>> message at 14:21:07.563004, though we have a 200 ok on BYE at
>>>>>>>>>> 14:21:07.156865 (pid=21493)
>>>>>>>>>> Bye request (pid=21495) was not finished to be treated at the
>>>>>>>>>> time 200 ok was received.
>>>>>>>>>>
>>>>>>>>>> This was done with my module active.
>>>>>>>>>> I'll make new tests without it.
>>>>>>>>>>
>>>>>>>>>> Regards,
>>>>>>>>>> Aurelien
>>>>>>>>> Daniel-Constantin Mierla a écrit :
>>>>>>>>>
>>>>>>>>>> ... disregard the previous patch, please use this one. It was
>>>>>>>>>> not the latest. Thanks,
>>>>>>>>>>
>>>>>>>>>> Daniel
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> On 12/10/08 23:52, Daniel-Constantin Mierla wrote:
>>>>>>>>>>
>>>>>>>>>>> Hello,
>>>>>>>>>>>
>>>>>>>>>>> On 12/09/08 20:41, Aurelien Grimaud wrote:
>>>>>>>>>>>
>>>>>>>>>>>> Daniel-Constantin Mierla a écrit :
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>> On 12/09/08 18:52, Aurelien Grimaud wrote:
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>> I am able to reproduce it with 1 call / second without my
>>>>>>>>>>>>>> module on BYE requests.
>>>>>>>>>>>>>> here are traces.
>>>>>>>>>>>>>>
>>>>>>>>>>>>> there is a race (at least), indeed. It happens when there
>>>>>>>>>>>>> is fast reply. I am going to send you a patch soon for
>>>>>>>>>>>>> testing, you use svn branch 1.4 or the tarball?
>>>>>>>>>>>>>
>>>>>>>>>>>> Great, I use the kamailio-1.4.2-notls tarball.
>>>>>>>>>>>> But I can test any SVN branch / trunk if you wish.
>>>>>>>>>>>>
>>>>>>>>>>> can you test the attached patch with SVN trunk? Let me know
>>>>>>>>>>> the results. Pay attention to see if breaks something else,
>>>>>>>>>>> not just if fixes the reported issue. I let there some debug
>>>>>>>>>>> messages, to help troubleshooting, if the fix is ok, I'll
>>>>>>>>>>> remove them before committing.
>>>>>>>>>>>
>>>>>>>>>>> Thanks,
>>>>>>>>>>> Daniel
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>> Aurelien
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>> Cheers,
>>>>>>>>>>>>> Daniel
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>> ps: I added the ms on Logs.
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> Aurelien
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> Daniel-Constantin Mierla a écrit :
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> On 12/09/08 17:56, Klaus Darilion wrote:
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>> Daniel-Constantin Mierla schrieb:
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> Hello,
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> On 12/09/08 17:31, Klaus Darilion wrote:
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>> Aurelien Grimaud schrieb:
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>> Fair enough.
>>>>>>>>>>>>>>>>>>> If no one already experienced this strange behavior,
>>>>>>>>>>>>>>>>>>> it should be my module ...
>>>>>>>>>>>>>>>>>>> I'll try to make it again without my module.
>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>> See my other email.
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>> However, in the log, after the 200 response, there
>>>>>>>>>>>>>>>>>>> is a cleanup_uac_timers: RETR/FR timers reset.
>>>>>>>>>>>>>>>>>>> So those timers are cleared.
>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>> But the problem is, that the process which handles
>>>>>>>>>>>>>>>>>> the INVITE has not finished yet and those (re)SETS
>>>>>>>>>>>>>>>>>> the timer.
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>> @Daniel - Have you investigated the problem?
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> so this is the half of the issue reported via:
>>>>>>>>>>>>>>>>> https://sourceforge.net/tracker/index.php?func=detail&aid=2105813&group_id=139143&atid=743020
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>> yes.
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>> Can it be related to other modules which register
>>>>>>>>>>>>>>>> callbacks (e.g. pua module or Aurelien's module?
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> what is the requests/second rate when the issue appears?
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> At first look, between sending and setting
>>>>>>>>>>>>>>> retransmission timer, there is no much processing for
>>>>>>>>>>>>>>> the request. The callback executed there is in use by
>>>>>>>>>>>>>>> siptrace, are you using this module?
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> Cheers,
>>>>>>>>>>>>>>> Daniel
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> This one got lost, but as I started to fix the other
>>>>>>>>>>>>>>>>> half (replying using proper mode to do
>>>>>>>>>>>>>>>>> retransmission), will investigate this as well ...
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>> Cheers,
>>>>>>>>>>>>>>>>> Daniel
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>
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>>>>>>>>>>>> http://lists.kamailio.org/cgi-bin/mailman/listinfo/users
>>>>>>>>>>>>
>>>>>>>>>>>>
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>>>>>>
>>>
>>>
>>
>
>
--
Daniel-Constantin Mierla
http://www.asipto.com
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