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

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@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@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@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?