[SR-Users] Is DMQ now the recommended way to do things?

[Charles Chance]

Hello Paolo,

This should fix your issue:
https://github.com/kamailio/kamailio/commit/a176ad4fb4167e21b01974e6a5caba330b1d7e14

Let me know so it can be merged.

Best,

Charles

On Thu, 21 Feb 2019 at 20:14, * Paolo Visintin - evosip.cloud
<paolo.visintin at evosip.cloud> wrote:

> Hello Henning,
> Due to some analysis (thanks for the activity to Enrico Bandiera and
> Giacomo Vacca) we found a bug in dmq module , internally made a quick and
> dirty patch and opened a issue on GitHub !
>
>
> Cheers
>
> Il giorno sab 26 gen 2019 alle 19:19 * Paolo Visintin - evosip.cloud
> <paolo.visintin at evosip.cloud> ha scritto:
>
>>
>> Hello Henning,
>> Correctly understood, this is exactly what I've experienced (kamailio
>> 5.2.0)
>> I'll absolutely make a new lab-test and strace  !
>>
>> Thanks for your suggestion!
>> Best regards
>>
>>
>>
>> Il giorno sab 26 gen 2019 alle ore 19:05 Henning Westerholt <
>> hw at kamailio.org> ha scritto:
>>
>>> Am Samstag, 26. Januar 2019, 19:00:32 CET schrieb * Paolo Visintin -
>>> > I'm using DMQ in order to share :
>>> > - htable
>>> > - usrloc
>>> >
>>> > for usrloc seems everything working as expected.
>>> >
>>> > on htable I have noticed, after some stresstest made with sipp (25 cps
>>> /
>>> > 600 concurrent calls) that one of the nodes (or sometimes both) eat a
>>> lot
>>> > of cpu (300%) after stresstest ended [all processes idle except f4 dmq
>>> > handlers]; I tried also to change some parameters on dmq module like
>>> > worker_usleep with no changes at all.
>>>
>>> Hello Paolo,
>>>
>>> just commenting on the first issue:
>>>
>>> So I understood you correctly, after the stress-test you observe a not
>>> ending
>>> CPU load on the Kamailio server, even without load?
>>>
>>> Maybe you can have a look on the CPU consuming processes by attaching
>>> e.g.
>>> "strace" to them at the next occasion, to see what they are doing.
>>>
>>> Best regards,
>>>
>>> Henning
>>>
>>> > At last, using kamailio in a kubernetes system I have several kamailio
>>> > instances that pops-up and then tiers down with different ips; for this
>>> > reason dmq seems not able to delete peers, adding, for every defunct
>>> node a
>>> > warning like this :
>>> > router-3 17(34) ERROR: dmq [notification_peer.c:599]:
>>> > notification_resp_callback_f(): deleting server
>>> > sip:172.28.1.211:5062;status=active
>>> > because of failed request
>>> > router-1 router-sr 17(33) ERROR: dmq [notification_peer.c:599]:
>>> > notification_resp_callback_f(): deleting server
>>> > sip:172.28.1.213:5062;status=active
>>> > because of failed request
>>> >
>>> > Il giorno sab 26 gen 2019 alle ore 01:43 Alex Balashov <
>>> >
>>> > abalashov at evaristesys.com> ha scritto:
>>> > > I think the realistic answer is that it's getting to be that way. I
>>> > > think DMQ is now the recommended way to share usrloc and htable
>>> across
>>> > > multiple hosts. DMQ+dialog is still a work in progress. Not sure
>>> about
>>> > > DMQ+some other new stuff.
>>> > >
>>> > > On Fri, Jan 25, 2019 at 04:21:43PM +0000, Canuck . wrote:
>>> > > > Before DMQ there were other ways to do similar things.  Is DMQ now
>>> > > > considered the best way? Assuming I am using recent stable?
>>> > > >
>>> > > > Are there any good guides on clustering Kamailio?  I am not
>>> finding a
>>> > > > lot of good info on that subject.  Specifically, for multi
>>> datacenter
>>> > > > active active where things like floating IP's and keepalived are
>>> not
>>> > > > really an option.
>>>
>>> --
>>> Henning Westerholt - https://skalatan.de/blog/
>>> Kamailio services - https://skalatan.de/services
>>> Kamailio security assessment - https://skalatan.de/de/assessment
>>>
>> --
>
> paolo visintin
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-- 
*Charles Chance*
Managing Director

t. 0330 120 1200    m. 07932 063 891

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