[OpenSIPS-Users] Memory Leak

Wed Dec 4 11:28:52 EST 2019

Thanks Johan, I've been through the rtpengine docs and source and can't see
any way to disable the RTCP call stat reports. Having said that I'm no
longer confident that RTPEngine is the problem - I'm losing memory
constantly at a rate of about 130MB/hour at all times, even overnight when
we are not seeing many calls. This seems to rule out the RTP reports or
anything call load related.

I now wonder if the issue is related to registrations and NAT pings (~3500
registrations). This is the only constant activity on the system overnight
(other than OpenSIPs clustering?). NAT pings are enabled for all contacts
and many of the handsets are also pinging the server, according to client
config.

At this time I am not sure where to focus my attention - I've collected
some data from my server (version, relevant module configs, memory dump) in
the hope that someone might be able to spot a problem with my setup - you
can find this at the following link:

https://gist.githubusercontent.com/spacetourist/2b880c71eda54bcabf691282d6389209/raw/25c42b90ffa4e592cd761237dffca6f85aabbf4f/gistfile1.txt

Please let me know if anything else would be useful. All ideas are very
much appreciated, thanks.

Callum

On Tue, 3 Dec 2019 at 17:31, Johan De Clercq <Johan at democon.be> wrote:

> I think you can. Check the documentation of rtpengine on github. And if
> you can, please use the latest commit.
>
> On Tue, 3 Dec 2019, 18:02 Callum Guy, <callum.guy at x-on.co.uk> wrote:
>
>> Hi All,
>>
>> I'm working through this memory issue and have some additional data. The
>> server crashed this afternoon due to memory exhaustion on a UDP listener
>> process, as far as I know at this time. Note that the processes all have
>> 4GB assigned so this is a gradual and constant growth issue.
>>
>> At this point I have my suspicions that it could be related to the
>> RTPEngine module - the first memory allocation error messages are all
>> related to what I believe the be RTCP session reports coming in from the
>> RTP engine servers. These came through about every second for an hour
>> before OpenSIPs finally gave up the ghost and restarted.
>>
>> Is this normal behaviour? We have only recently moved to RTPEngine from
>> RTPProxy so I am new to this software. Does anyone know if it is possible
>> to prevent RTPEngine from sending this data to OpenSIPs - its not something
>> that we require and I'd like to check if this is at all related to the
>> memory growth. Any other ideas would also be appreciated!
>>
>> Many thanks,
>>
>> Callum
>>
>> 2019-12-03T11:48:14.653225+00:00 TH-P-SIPREG-1 opensips[2521]:
>> ERROR:core:fm_malloc: not enough free pkg memory (214628248 bytes left,
>> need 536), please increase the "-M" command line parameter!
>> 2019-12-03T11:48:14.653851+00:00 TH-P-SIPREG-1 opensips[2521]:
>> INFO:core:fm_malloc: attempting defragmentation...
>> 2019-12-03T11:48:15.651495+00:00 TH-P-SIPREG-1 opensips[2521]:
>> INFO:core:fm_malloc: unable to alloc a big enough fragment!
>> 2019-12-03T11:48:15.652218+00:00 TH-P-SIPREG-1 opensips[2521]:
>> ERROR:rtpengine:rtpe_function_call: failed to decode bencoded reply from
>> proxy: d7:createdi1575373650e10:created_usi505483e11:last
>> signali1575373670e4:SSRCd10:3831331386d11:average
>> MOSd3:MOSi44e15:round-trip timei6754e6:jitteri0e11:packet
>> lossi0e7:samplesi9ee10:lowest MOSd3:MOSi44e15:round-trip
>> timei6175e6:jitteri0e11:packet lossi0e11:reported ati1575373656ee11:highest
>> MOSd3:MOSi44e15:round-trip timei6175e6:jitteri0e11:packet
>> lossi0e11:reported ati1575373656ee15:MOS
>> progressiond8:intervali3e7:entriesld3:MOSi44e15:round-trip
>> timei6175e6:jitteri0e11:packet lossi0e11:reported
>> ati1575373656eed3:MOSi44e15:round-trip timei6307e6:jitteri0e11:packet
>> lossi0e11:reported ati1575373660eed3:MOSi44e15:round-trip
>> timei6884e6:jitteri0e11:packet lossi0e11:reported
>> ati1575373664eed3:MOSi44e15:round-trip timei7016e6:jitteri0e11:packet
>> lossi0e11:reported ati1575373668eed3:MOSi44e15:round-trip
>> timei6368e6:jitteri0e11:packet lossi0e11:reported
>> ati1575373674eed3:MOSi44e15:round-trip timei6929e6:jitteri0e11:packet
>> lossi0e11:reported ati1575373679eed3:MOSi44e15:round-trip
>> timei6884e6:jitteri0e11:packet lossi0e11:reported
>> ati1575373684eed3:MOSi44e15:round-trip timei7241e6:jitteri0e11:packet
>> lossi0e11:reported ati1575373689eed3:MOSi44e15:round-trip
>> timei6988e6:jitteri0e11:packet lossi0e11:reported
>> ati1575373694eeeee10:1028099660d11:average MOSd3:MOSi43e15:round-trip
>> timei29936e6:jitteri0e11:packet lossi0e7:samplesi7ee10:lowest
>> MOSd3:MOSi43e15:round-trip timei29515e6:jitteri0e11:packet
>> lossi0e11:reported ati1575373661ee11:highest MOSd3:MOSi43e15:round-trip
>> timei29515e6:jitteri0e11:packet lossi0e11:reported ati1575373661ee15:MOS
>> progressiond8:intervali3e7:entriesld3:MOSi43e15:round-trip
>> timei29515e6:jitteri0e11:packet lossi0e11:reported
>> ati1575373661eed3:MOSi43e15:round-trip timei29817e6:jitteri0e11:packet
>> lossi0e11:reported ati1575373666eed3:MOSi43e15:round-trip
>> timei30695e6:jitteri0e11:packet lossi0e11:reported
>> ati1575373671eed3:MOSi43e15:round-trip timei29541e6:jitteri0e11:packet
>> lossi0e11:reported ati1575373676eed3:MOSi43e15:round-trip
>> timei30073e6:jitteri0e11:packet lossi0e11:reported
>> ati1575373681eed3:MOSi43e15:round-trip timei29526e6:jitteri0e11:packet
>> lossi0e11:reported ati1575373686eed3:MOSi43e15:round-trip
>> timei30391e6:jitteri0e11:packet lossi0e11:reported
>> ati1575373691eeeeee4:tagsd10:3044367218d3:tag10:30443672187:createdi1575373650e16:in
>> dialogue
>> with13:N8Nr5mDpcNt1a6:mediasld5:indexi1e4:type5:audio8:protocol7:RTP/AVP7:streamsld10:local
>> porti32494e8:endpointd6:family4:IPv47:address13:51.51.51.514:porti47360ee19:advertised
>> endpointd6:family4:IPv47:address9:10.0.0.154:porti12672ee11:last
>> packeti1575373694e5:flagsl3:RTP6:filled9:confirmed10:kernelizede4:SSRCi1028099660e5:statsd7:packetsi2045e5:bytesi351740e6:errorsi0eeed10:local
>> porti32495e8:endpointd6:family4:IPv47:address13:51.51.51.514:porti47361ee19:advertised
>> endpointd6:family4:IPv47:address9:10.0.0.154:porti12673ee11:last
>> packeti1575373691e5:flagsl4:RTCP6:filled9:confirmed10:kernelized17:no
>> kernel
>> supporte4:SSRCi1028099660e5:statsd7:packetsi8e5:bytesi1240e6:errorsi0eeee5:flagsl11:initialized4:send4:recveeee13:N8Nr5mDpcNt1ad3:tag13:N8Nr5mDpcNt1a7:createdi1575373650e16:in
>> dialogue
>> with10:30443672186:mediasld5:indexi1e4:type5:audio8:protocol7:RTP/AVP7:streamsld10:local
>> porti34226e8:endpointd6:family4:IPv47:address15:192.168.163.2224:porti11484ee19:advertised
>> endpointd6:family4:IPv47:address15:192.168.163.2224:porti11484ee11:last
>> packeti1575373694e5:flagsl3:RTP6:filled9:confirmed10:kernelizede4:SSRCi3831331386e5:statsd7:packetsi2018e5:bytesi347096e6:errorsi0eeed10:local
>> porti34227e8:endpointd6:family4:IPv47:address15:192.168.163.2224:porti11485ee19:advertised
>> endpointd6:family4:IPv47:address15:192.168.163.2224:porti11485ee11:last
>> packeti1575373694e5:flagsl4:RTCP6:filled9:confirmed10:kernelized17:no
>> kernel
>> supporte4:SSRCi3831331386e5:statsd7:packetsi9e5:bytesi1008e6:errorsi0eeee5:flagsl11:initialized4:send4:recv15:ICE
>> controllingeeeee6:totalsd3:RTPd7:packetsi4063e5:bytesi698836e6:errorsi0ee4:RTCPd7:packetsi17e5:bytesi2248e6:errorsi0eee6:result2:oke
>>
>>
>> On Sat, 30 Nov 2019 at 22:51, Callum Guy <callum.guy at x-on.co.uk> wrote:
>>
>>> Hi Ben,
>>>
>>> Thank you for your reply and insight here, very helpful to know you're
>>> running a drastically different setting for the package memory.
>>>
>>> I presumed if it preallocated that I would have seen some issues during
>>> testing, hence I've ended up with figures that were intended to provide 75%
>>> of the system memory to the application.
>>>
>>> Memory usage had been creeping up all day at the time of writing however
>>> migrations to this platform had been on hold since the initial capture of
>>> memory usage although call traffic would have been relatively even during
>>> daytime hours where the increase continued. On that basis I'm still
>>> concerned that there is an issue with my config causing this growth however
>>> I've now increased available memory and restarted so I should have ample
>>> time to investigate this week, I'll report back any findings for the
>>> community benefit. I will give some serious thought to lowering the package
>>> allocation value once I've got to grips with the situation.
>>>
>>> Usefully this implementation shares a lot of common components to
>>> another variant which acts as a pure proxy and does not deal with
>>> registrations where I'm not seeing this issue so that will narrow down the
>>> search area somewhat.
>>>
>>> Thanks again for your time,
>>>
>>> Callum
>>>
>>> On Sat, 30 Nov 2019, 15:46 Ben Newlin, <Ben.Newlin at genesys.com> wrote:
>>>
>>>> Callum,
>>>>
>>>>
>>>>
>>>> It’s my understanding that OpenSIPS does not release memory back to the
>>>> OS, but it also pre-allocates all memory at startup into its private pool
>>>> and then allocates from that internally. Normally shared memory should be
>>>> significantly higher than package memory. For reference, on our system we
>>>> run with “-m 1024 -M 64” and that is sufficient for us to process very high
>>>> traffic volume. We don’t do registration though, so that may affect the
>>>> sizes you need.
>>>>
>>>>
>>>>
>>>> You are setting your package memory size to 4G, so that will allocate
>>>> 4G memory for every package (process) that loads and then 2G for shared
>>>> memory. That will use up all the memory on your machine extremely quickly
>>>> for sure. The statistics you provided seem like the memory increase is
>>>> consistent with higher traffic levels on the second reading. You can see in
>>>> your case that all of your “pkmem” processes have an extremely high amount
>>>> of free memory (~3GB!). But that memory is still allocated from the OS, so
>>>> you are instructing OpenSIPS to allocate much more than your system memory
>>>> right at startup.
>>>>
>>>>
>>>>
>>>> Your shared memory also has just under 2GB free, so you have a lot of
>>>> headroom there too. Since OpenSIPS pre-allocates, the amount of memory
>>>> being used by the system overall should be fairly steady; if it is
>>>> continuously increasing that implies a leak somewhere. IIRC there are a few
>>>> processes/modules/commands in OpenSIPS or libraries it uses that do
>>>> allocate memory directly from the system and not from OpenSIPS’ pool. You
>>>> may need to investigate some of those to find out where your memory is
>>>> going, or look at other processes/daemons you have running that could be
>>>> using that memory.
>>>>
>>>>
>>>>
>>>> Ben Newlin
>>>>
>>>>
>>>>
>>>> *From: *Users <users-bounces at lists.opensips.org> on behalf of Callum
>>>> Guy <callum.guy at x-on.co.uk>
>>>> *Reply-To: *OpenSIPS users mailling list <users at lists.opensips.org>
>>>> *Date: *Friday, November 29, 2019 at 10:57 AM
>>>> *To: *OpenSIPS users mailling list <users at lists.opensips.org>
>>>> *Subject: *[OpenSIPS-Users] Memory Leak - runtime flags?
>>>>
>>>>
>>>>
>>>> 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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>>>>
>>>>
>>>>
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