[OpenSER-Users] [OpenSER-Devel] Memory dump for OpenSER 1.3.1 which slowly leaks memory

[Bogdan-Andrei Iancu]

Hi Henning,

Thanks for the hint.

So, your openser processes should use as private memory:
    (8/*udp*/ + 1/*timer*/ + 1/*attendant*/ + 1/*fifo*/) * 1 = 11M

So, overall, all openser processes will use 11 + 128 = 139M plus memory 
requested directly from the OS.

looking at your numbers:

<quote>

# ps -C openser -o vsz,rss
  VSZ  RSS
234124 12636
369940 159392
369940 158840
369940 158860
370340 159220
369804 158696
370068 158932
370204 159048
370464 159344
234124 20904
234124 9484
234128 7952
234124 7948
234124 7880
234124 7880
234124 7880
234124 7880
234124 7880
234124 7880
234124 7880
234124 8332

</quote>

it is clearly that you have 8 workers (2 - 9) - the rest of the 
processes have a similar VSZ and RSS, so no more mem is required form 
the system.

For the workers, I guess there are some script function (from some 
modules) that are directly requesting memory (and not via openser mem 
manager). Looking at your list:

<quote>

loadmodule "mysql.so"
loadmodule "sl.so"
loadmodule "tm.so"
loadmodule "usrloc.so"
loadmodule "auth.so"
loadmodule "auth_db.so"
loadmodule "maxfwd.so"
loadmodule "mi_fifo.so"
loadmodule "nathelper.so"
loadmodule "perl.so"
loadmodule "registrar.so"
loadmodule "rr.so"
loadmodule "textops.so"
loadmodule "uri.so"

</quote>

there are none of the modules that use libxml2 or expat, but I see you 
are using perl - there were some past problems with mem leaks due this 
module, so you may try to take out the module and see if the leak is 
still present.

Regards,
Bogdan

Henning Westerholt wrote:
> On Thursday 08 May 2008, Bogdan-Andrei Iancu wrote:
>   
>> how much private and shared memory are you using and how many process
>> you have?
>>
>> Again, note that openser is not dynamically getting memory from OS at
>> runtime - all memory that is used by openser is requested from OS at
>> startup.
>>     
>
> Hi Bogdan,
>
> (quoted from a previous mail from him)
>
>   
>> Private memory is default.  Should I increase this?  Is there a
>> recommended rule of thumb?
>>
>> Shared memory is set for 128Mb.  There were memory errors at 32Mb but
>> none since this was increased to 128Mb.
>>
>> Using the setting 'children = 8'.
>>     
>
> Cheers,
>
> Henning
>
>