[SR-Users] Question about suspected memory leak presence module

[Albert Petit]

hi

using kamailio 4.4.7 on that environment

i will try to run some test locally simulating reception of a lot presence
subscription and  observe mem_copy_subs_noc(),
Just to understand,  both mem_copy_subs_noc are not expected to increase,
is that right? What do they exactly mean?

Thanks


On Sat, 11 Sep 2021, 22:22 Henning Westerholt, <hw at skalatan.de> wrote:

> Hello,
>
>
>
> the output below indicates the memory allocated in the individual
> functions. So it seems that the mem_copy_subs_noc() function allocates a
> lot of memory. It is increasing over time? The final output looks like a
> wrapping error, the counter goes negative.
>
>
>
> Which version of Kamailio do you use on the
>


server?
>
>
>
> Cheers,
>
>
>
> Henning
>
>
>
> --
>
> Henning Westerholt – https://skalatan.de/blog/
>
> Kamailio services – https://gilawa.com
>
>
>
> *From:* sr-users <sr-users-bounces at lists.kamailio.org> *On Behalf Of *Albert
> Petit
> *Sent:* Thursday, September 9, 2021 11:42 PM
> *To:* SIP Router - Kamailio (OpenSER) and SIP Express Router (SER) -
> Users Mailing List <sr-users at lists.sip-router.org>
> *Subject:* [SR-Users] Question about suspected memory leak presence module
>
>
>
> Hi,
>
>
>
> I am suspecitng presence module might be having a memory leak on a
> production server used by an end user (not have access to it).
>
>
>
> The output of command kamcmd mod.stats presence shm is
>
> Module: presence
>
> {
>
>         mem_copy_subs(148): 25720
>
>         mem_copy_subs_noc(214): 1672201904
>
>         mem_copy_subs_noc(251): 678406560
>
>         add_event(181): 88
>
>         shm_copy_event(57): 40
>
>         shm_copy_event(50): 312
>
>         add_event(156): 40
>
>         add_event(149): 456
>
>         new_shtable(66): 5767168
>
>         new_shtable(53): 262144
>
>         init_evlist(289): 16
>
>         Total: -1938302848
>
> }
>
>
>
> I am not sure what mem_copy_subs_noc is meaning. And final output is
> negative,  SHM is incfreasing all the time but not sure of the root cause
>
>
>
> is this a reasonable hint that a memory leak is related to presence?
>
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