[SR-Users] Memory leak in 3.3.4
Daniel-Constantin Mierla
miconda at gmail.com
Wed Oct 16 11:28:35 CEST 2013
Hello,
indeed, it looks like a system memory leak, for what so ever reason the
discussion was misled to pkg.
Can you send me the list of modules you load (loadmodule lines) as well
as the functions from your perl script that are related to kamailio
internal functions or variables? You can send directly to me, without
mailing list if there is something you want to protect from public eyes.
Cheers,
Daniel
On 10/15/13 5:12 AM, David Cunningham wrote:
> Hi Daniel,
>
> Thanks for the reply again. Looking at the email history, I'm not sure
> how we decided it was definitely a pkg memory problem. What we see is
> the output of "ps aux" as follows:
>
> root at sip0-test:~# ps aux | egrep -i "kamailio|mem"
> USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
> root 6794 0.0 0.0 22480 1868 ? Ss Oct02 0:12
> /opt/testuser/current/sbin/testuser_safe_kamailio
> testuser 6822 0.0 0.2 556528 4580 ? S Oct02 0:00
> /sbin/kamailio -m 512 -P /var/run/testuser/kamailio.pid
> testuser 6824 0.3 8.7 825552 180244 ? S Oct02 56:40
> /sbin/kamailio -m 512 -P /var/run/testuser/kamailio.pid
> testuser 6825 0.3 8.7 825536 180776 ? S Oct02 56:20
> /sbin/kamailio -m 512 -P /var/run/testuser/kamailio.pid
> testuser 6826 0.3 8.7 825912 180296 ? S Oct02 55:54
> /sbin/kamailio -m 512 -P /var/run/testuser/kamailio.pid
> testuser 6827 0.3 8.7 825744 180580 ? S Oct02 56:19
> /sbin/kamailio -m 512 -P /var/run/testuser/kamailio.pid
> testuser 6828 0.3 8.7 825536 180092 ? S Oct02 56:25
> /sbin/kamailio -m 512 -P /var/run/testuser/kamailio.pid
> testuser 6829 0.3 8.7 825536 180632 ? S Oct02 56:21
> /sbin/kamailio -m 512 -P /var/run/testuser/kamailio.pid
> testuser 6830 0.3 8.7 825472 180968 ? S Oct02 56:37
> /sbin/kamailio -m 512 -P /var/run/testuser/kamailio.pid
> testuser 6831 0.3 8.7 825276 180272 ? S Oct02 56:41
> /sbin/kamailio -m 512 -P /var/run/testuser/kamailio.pid
> testuser 6832 0.0 0.0 556528 1324 ? S Oct02 0:00
> /sbin/kamailio -m 512 -P /var/run/testuser/kamailio.pid
> testuser 6833 0.0 0.0 556528 1324 ? S Oct02 0:00
> /sbin/kamailio -m 512 -P /var/run/testuser/kamailio.pid
> testuser 6834 0.0 0.0 556528 1324 ? S Oct02 0:00
> /sbin/kamailio -m 512 -P /var/run/testuser/kamailio.pid
> testuser 6835 0.0 0.0 556528 1324 ? S Oct02 0:00
> /sbin/kamailio -m 512 -P /var/run/testuser/kamailio.pid
> testuser 6836 0.0 0.0 556528 1324 ? S Oct02 0:00
> /sbin/kamailio -m 512 -P /var/run/testuser/kamailio.pid
> testuser 6837 0.0 0.0 556528 1324 ? S Oct02 0:00
> /sbin/kamailio -m 512 -P /var/run/testuser/kamailio.pid
> testuser 6838 0.0 0.0 556528 1324 ? S Oct02 0:00
> /sbin/kamailio -m 512 -P /var/run/testuser/kamailio.pid
> testuser 6839 0.0 0.0 556528 1324 ? S Oct02 0:00
> /sbin/kamailio -m 512 -P /var/run/testuser/kamailio.pid
> testuser 6840 0.0 0.0 556528 1776 ? S Oct02 0:00
> /sbin/kamailio -m 512 -P /var/run/testuser/kamailio.pid
> testuser 6841 0.0 0.0 556528 1780 ? S Oct02 0:00
> /sbin/kamailio -m 512 -P /var/run/testuser/kamailio.pid
> testuser 6842 0.0 0.0 556528 1780 ? S Oct02 0:00
> /sbin/kamailio -m 512 -P /var/run/testuser/kamailio.pid
> testuser 6843 0.0 0.0 556528 1328 ? S Oct02 0:00
> /sbin/kamailio -m 512 -P /var/run/testuser/kamailio.pid
> testuser 6844 0.0 0.0 556528 1780 ? S Oct02 0:00
> /sbin/kamailio -m 512 -P /var/run/testuser/kamailio.pid
> testuser 6845 0.0 0.0 556528 1328 ? S Oct02 0:00
> /sbin/kamailio -m 512 -P /var/run/testuser/kamailio.pid
> testuser 6846 0.0 0.0 556528 1328 ? S Oct02 0:00
> /sbin/kamailio -m 512 -P /var/run/testuser/kamailio.pid
> testuser 6847 0.0 0.0 556528 1328 ? S Oct02 0:00
> /sbin/kamailio -m 512 -P /var/run/testuser/kamailio.pid
> testuser 6848 0.0 0.0 556528 1676 ? S Oct02 0:02
> /sbin/kamailio -m 512 -P /var/run/testuser/kamailio.pid
> testuser 6849 0.0 0.1 556528 3568 ? S Oct02 5:28
> /sbin/kamailio -m 512 -P /var/run/testuser/kamailio.pid
> testuser 6850 0.0 0.0 556612 1600 ? S Oct02 0:00
> /sbin/kamailio -m 512 -P /var/run/testuser/kamailio.pid
> testuser 6851 0.0 0.0 556532 1188 ? S Oct02 0:00
> /sbin/kamailio -m 512 -P /var/run/testuser/kamailio.pid
> testuser 6852 0.0 0.0 556528 1360 ? S Oct02 0:02
> /sbin/kamailio -m 512 -P /var/run/testuser/kamailio.pid
>
> You'll see for example that process 6824 is using 8.7% of memory,
> which is much more than it was using 5 days ago. Yet if I run the same
> sercmd again I get (exactly!) the same numbers:
>
> root at sip0-test:~# sercmd pkg.stats pid 6824
> {
> entry: 1
> pid: 6824
> rank: 1
> used: 209836
> free: 3704080
> real_used: 490224
> }
>
> Any ideas?
>
>
>
> On 12 October 2013 00:23, Daniel-Constantin Mierla <miconda at gmail.com
> <mailto:miconda at gmail.com>> wrote:
>
> Hi David,
>
>
> On 10/10/13 11:36 PM, David Cunningham wrote:
>
> Hi Daniel,
>
> Thanks for the reply. Perhaps what we're seeing is normal, and
> the memory use is meant to increase as time progresses. Would
> you expect to see an ongoing memory use increase, or when
> should it stop increasing?
>
>
> private memory (pkg) should stay rather constant. It increases
> when there is a sip message processed, but once is sent out, it
> should come back around the average.
>
> There are couple of functions that can fill the private memory and
> keep it up, such as doing an sql_query() that returns a big data
> and the result is not freed (sql_result_free()). It is not
> actually a leak as the next sql_query() will free previous result,
> but in case you have such query for some corner case that is not
> executed frequently, then the memory can stay filled in. Another
> example will be storing very large value in a $var(...) (e.g.,
> $var(x) ).
>
> This is private memory, per process, which is meant for temporary
> operations. Shared memory (shm) can increase over the time, being
> the place where the dynamic data required at runtime is stored
> (e.g., location records, hash tables, transactions) - so as you
> get more traffic or more phones using kamailio, more shm is used.
> But your problem was reported for pkg.
>
> Anyhow, keep an eye on the pkg.stats and if you see constant
> increase which is substantial, then get a mem log dump.
>
> Cheers,
> Daniel
>
>
> --
> Daniel-Constantin Mierla - http://www.asipto.com
> http://twitter.com/#!/miconda <http://twitter.com/#%21/miconda> -
> http://www.linkedin.com/in/miconda
> Kamailio Advanced Trainings - Berlin, Nov 25-28; Miami, Nov 18-20,
> 2013
> - more details about Kamailio trainings at http://www.asipto.com -
>
>
>
>
> --
> David Cunningham, Voisonics
> http://voisonics.com/
> USA: +1 213 221 1092
> UK: +44 (0) 20 3298 1642
> Australia: +61 (0) 2 8063 9019
--
Daniel-Constantin Mierla - http://www.asipto.com
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
Kamailio Advanced Trainings - Berlin, Nov 25-28; Miami, Nov 18-20, 2013
- more details about Kamailio trainings at http://www.asipto.com -
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