[SR-Users] TCP packet relay delayed (Kamailio 4.1.5)

Tue Apr 24 20:01:54 CEST 2018

It's an existing connection.  Our clients/servers sends many UPDATE/OPTION
to update the state of the meeting on both ends and sometimes these
messages don't get a response and affects user experience.

On Tue, Apr 24, 2018 at 10:51 AM, Daniel-Constantin Mierla <
miconda at gmail.com> wrote:

> Another aspect -- are the connections to be used for transmission already
> open? If it is a new connection, it can be also the fact that the other
> side is not accepting the new one very fast.
>
> Cheers,
> Daniel
>
> On 24.04.18 19:46, Andrew Chen wrote:
>
> Thanks Daniel.
>
> On Tue, Apr 24, 2018 at 10:45 AM, Daniel-Constantin Mierla <
> miconda at gmail.com> wrote:
>
>> Hello,
>>
>> you can see tcp write queued bytes with:
>>
>> kamctl rpc core.tcp_info
>>
>> If you have an older version, do kamcmd core.tcp_info
>>
>> It may be also the OS queues that are busy, if the other side is not not
>> reading fast, look at netstat output for Send-Queue in:
>>
>> netstat -altp
>>
>> Cheers,
>> Daniel
>>
>> On 22.04.18 18:47, Andrew Chen wrote:
>>
>> Hello,
>>
>> Can anyone provide any suggestions on how to log buffer usage?
>>
>> On Tue, Apr 17, 2018 at 7:46 PM, Andrew Chen <achen at fuze.com> wrote:
>>
>>> Thanks Alex for your response.  I honestly forgot about these parameters
>>> and will play with them a bit.
>>>
>>> Is there anyway to log how much is written or stored in the buffer?
>>>
>>> On Tue, Apr 17, 2018 at 7:35 PM, Alex Balashov <
>>> abalashov at evaristesys.com> wrote:
>>>
>>>> Hello,
>>>>
>>>> Could it be that your send queue or other parameters regulating outgoing
>>>> flows are too low?
>>>>
>>>> Stuff like this:
>>>>
>>>> https://www.kamailio.org/wiki/cookbooks/5.1.x/core#tcp_conn_wq_max
>>>> https://www.kamailio.org/wiki/cookbooks/5.1.x/core#tcp_wq_max
>>>>
>>>> -- Alex
>>>>
>>>> On Tue, Apr 17, 2018 at 05:00:28PM -0700, Andrew Chen wrote:
>>>>
>>>> > Hi Kamailio community,
>>>> >
>>>> > I need your urgent help regarding a situation where the Kamailio TCP
>>>> packet
>>>> > delayed in relaying SIP packets.  They delay between the time
>>>> Kamailio logs
>>>> > the relay to the time it left the system was ~20 seconds difference,
>>>> which
>>>> > is huge in SIP world.
>>>> >
>>>> > Any ideas, thoughts or suggestions on how I can narrow down to the
>>>> > problem?  We have about 30 cases of this today
>>>> >
>>>> > Thanks in advance.
>>>> >
>>>> > --
>>>> > Andy Chen
>>>> > Sr. Telephony Lead Engineer
>>>> > achen@ <achen at thinkingphones.com>fuze.com
>>>> >
>>>> > --
>>>> > *Confidentiality Notice: The information contained in this e-mail and
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>>>>
>>>> > _______________________________________________
>>>> > Kamailio (SER) - Users Mailing List
>>>> > sr-users at lists.kamailio.org
>>>> > https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>>>>
>>>>
>>>> --
>>>> Alex Balashov | Principal | Evariste Systems LLC
>>>>
>>>> Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free)
>>>> Web: http://www.evaristesys.com/, http://www.csrpswitch.com/
>>>>
>>>> _______________________________________________
>>>> Kamailio (SER) - Users Mailing List
>>>> sr-users at lists.kamailio.org
>>>> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>>>>
>>>
>>>
>>>
>>> --
>>> Andy Chen
>>> Sr. Telephony Lead Engineer
>>> 415 516 5535 (M)
>>> achen@ <achen at thinkingphones.com>fuze.com
>>>
>>>
>>
>>
>> --
>> Andy Chen
>> Sr. Telephony Lead Engineer
>> 415 516 5535 (M)
>> achen@ <achen at thinkingphones.com>fuze.com
>>
>>
>> *Confidentiality Notice: The information contained in this e-mail and any
>> attachments may be confidential. If you are not an intended recipient, you
>> are hereby notified that any dissemination, distribution or copying of
>> this
>> e-mail is strictly prohibited. If you have received this e-mail in error,
>> please notify the sender and permanently delete the e-mail and any
>> attachments immediately. You should not retain, copy or use this e-mail or
>> any attachment for any purpose, nor disclose all or any part of the
>> contents to any other person. Thank you.*
>>
>> _______________________________________________
>> Kamailio (SER) - Users Mailing Listsr-users at lists.kamailio.orghttps://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>>
>>
>> --
>> Daniel-Constantin Mierlawww.twitter.com/miconda -- www.linkedin.com/in/miconda
>> Kamailio World Conference - May 14-16, 2018 - www.kamailioworld.com
>>
>>
>
>
> --
> Andy Chen
> Sr. Telephony Lead Engineer
> 415 516 5535 (M)
> achen@ <achen at thinkingphones.com>fuze.com
>
>
> *Confidentiality Notice: The information contained in this e-mail and any
> attachments may be confidential. If you are not an intended recipient, you
> are hereby notified that any dissemination, distribution or copying of this
> e-mail is strictly prohibited. If you have received this e-mail in error,
> please notify the sender and permanently delete the e-mail and any
> attachments immediately. You should not retain, copy or use this e-mail or
> any attachment for any purpose, nor disclose all or any part of the
> contents to any other person. Thank you.*
>
>
> --
> Daniel-Constantin Mierlawww.twitter.com/miconda -- www.linkedin.com/in/miconda
> Kamailio World Conference - May 14-16, 2018 - www.kamailioworld.com
>
>

-- 
Andy Chen
Sr. Telephony Lead Engineer
415 516 5535 (M)
achen@ <achen at thinkingphones.com>fuze.com

-- 
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