[OpenSIPS-Users] Memory Leak - runtime flags?

[Callum Guy]

Hi All,

I have recently deployed a new registrar and have been seeing a gradual
increase in the memory footprint - enough that I'm having to expand the RAM
(its virtualised) to ensure it doesn't run out.

You can see a diff of the statistics collected last night at 11pm and today
at 3pm here:
https://gist.github.com/spacetourist/2103503674e134bd598c7f1e3a82674c/revisions

Processes 5-9 are my UDP SIP receiver threads (autoscaled down from an
initial footprint of 20 threads).

Using 3.0.1 on CentOS 7 8GB RAM (soon to be 32GB!). Currently OpenSIPs is
using all the RAM (minus OS usage) and 2GB of swap. Trying to use dialog
and dr clustering if that is significant.  Alos have NAT pings configured
for all registrations (4000 at time of writing).

I am using runtime configuration flags of "*-m 2048 -M 4096*" and am
concerned that these were (way) too high, I think I've misinterpreted their
meaning during initial setup. Is this a ridiculous setting for my
environment? Is it just as simple as OpenSIPs being greedy with the memory
such that it doesn't bother to free anything while each process free space
remaining? Should my -M value * max number of processes fit into my RAM? I
guess with an 8GB system that would mean dropping this to "-M 256"?

I've done some research into the issue however I haven't found anything
else that would be an obvious target so wondered if the community might
have some ideas of where I can begin investigations.

Many thanks,

Callum

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