Re: [SR-Users] Memory leak in 3.3.4

Hi Daniel, I'll suggest that to the customer. Thank you! On 25 July 2013 15:45, Daniel-Constantin Mierla &lt;miconda(a)gmail.com&gt;wrote;wrote: > Hello, > > can you try the attached patch? It's the same patch, just for two > versions, one is for 3.3.x and the other for devel version > > It initializes the SIP message variable that is passed to perl after > creating the temporary environment, so it is actually destroyed by the perl > embedded interpreter. > > Cheers, > Daniel > > > On 7/25/13 1:29 AM, David Cunningham wrote: > > Hi Daniel, > > The system is running Perl 5.8.8 on Red Hat Enterprise Linux Server > release 5.4. If I remember right programs running under Valgrind can have > issues, so I'm not sure if the customer will want to do that. Ideally we'd > do it on a test system, but I'm not sure if we have any RHEL available. > I'll see what we can do. Thanks again. > > > On 25 July 2013 04:55, Daniel-Constantin Mierla &lt;miconda(a)gmail.com&gt;wrote;wrote: > >> Hello, >> >> I would say that perl_exec() is the one with the highest chances to >> be the reason for the leak. Next is line would be db_mysql module, if liked >> with some custom mysql client library, although even in this case will be >> unlikely. >> >> Back to perl, the module itself does not call any malloc, so it might >> be the embedding Perl API that is not used properly in the module. >> >> Can you use some testbed, set children=1 and run kamailio under >> valgrind, then do some calls and see if it detects the source of the leak? >> >> I'm not using the perl module, I will try to check it whenever I get >> a chance in the next days. What version of perl do you have installed? >> >> Cheers, >> Daniel >> >> >> On 7/24/13 10:31 AM, David Cunningham wrote: >> >> Hello, >> >> We don't do any kamctl commands at all. We do have various modules >> loaded, as follows. The primary functions we use Kamailio for are phone >> registrations through usrloc, and routing calls to Asterisk through logic >> contained in Perl via perl_exec(). >> Thanks for all your advice so far! >> >> loadmodule "tm.so" >> loadmodule "tmx.so" >> loadmodule "usrloc.so" >> loadmodule "auth.so" >> loadmodule "auth_db.so" >> loadmodule "ctl.so" >> loadmodule "db_mysql.so" >> loadmodule "kex.so" >> loadmodule "maxfwd.so" >> loadmodule "mi_fifo.so" >> loadmodule "mi_rpc.so" >> loadmodule "nathelper.so" >> loadmodule "perl.so" >> loadmodule "pv.so" >> loadmodule "registrar.so" >> loadmodule "rr.so" >> loadmodule "sanity.so" >> loadmodule "siputils.so" >> loadmodule "sl.so" >> loadmodule "textops.so" >> loadmodule "xlog.so" >> >> >> On 24 July 2013 16:33, Daniel-Constantin Mierla &lt;miconda(a)gmail.com&gt;wrote;wrote: >> >>> Hello, >>> >>> >>> On 7/24/13 4:24 AM, David Cunningham wrote: >>> >>> Hello, >>> >>> Thank you very much for the email. In reply: >>> >>> 1. The system ran out of memory. Linux's oom-killer killed Kamailio. >>> >>> then all the instructions I gave are useless, they are for debugging >>> kamailio's internal memory manager, which handles pkg and shm mallocs. >>> >>> The chances to be from kamailio itself are very low now. Do you do >>> lot of mi commands (e.g., kamctl ...)? The mi api uses system malloc, but >>> the rest of code should use internal memory manager which does not go >>> beyond the limits set with -m and -M, thus not causing an OS memory >>> exhaustion. >>> >>> Can you list what modules are you loading? At some point it was a >>> leak in libssl, in case you use tls a lot. But could be another external >>> library... >>> >>> Cheers, >>> Daniel >>> >>> >>> >>> 2. You're right, DEBUG_MEMORY is a local configuration setting. If >>> defined it sets memdbg to -2, and memlog to -2. The debug setting is -1. >>> >>> 3. We'll try setting mem_summary=12, thanks. >>> >>> 4. We'll try setting asynchronous syslog, thanks. >>> >>> 5. Our configuration totals 338 lines, or approx 8.5kb. Is that a >>> lot? >>> >>> 6. We'll try setting mem_join=1, thanks. >>> >>> >>> >>> On 23 July 2013 16:53, Daniel-Constantin Mierla &lt;miconda(a)gmail.com&gt;wrote;wrote: >>> >>>> Hello, >>>> >>>> first, to clarify, is the system memory or kamailio's pkg/shm >>>> memory running out? If the operating system runs out of memory, then should >>>> be a leak in a library, because kamailio modules uses only from a >>>> pre-allocated chunk, not going over it. >>>> >>>> >>>> On 7/23/13 7:33 AM, David Cunningham wrote: >>>> >>>>> Hello, >>>>> >>>>> We're running a Kamailio 3.3.4 system, and Kamailio is slowly >>>>> using more and more memory. Over a couple of weeks it will run out of >>>>> system memory. >>>>> >>>>> We tried to enable memory debugging doing the following, but it >>>>> resulted in Kamailio not responding to any SIP packets. Would anyone have >>>>> advice please on how to debug the situation? >>>>> >>>>> 1. In Makefile.defs set MEMDBG to 1 and recompile Kamailio. >>>>> 2. In kamailio.cfg add the line: >>>>> #!define DEBUG_MEMORY 1 >>>>> >>>> do you set something special in config when DEBUG_MEMORY is 1? It >>>> is not by default there, so I assume you added some rules based on this >>>> pre-processor directive. >>>> >>>> For memory troubleshooting, set memlog to a value lower than debug >>>> parameter in config file and try with mem_summary=12 for a more compact >>>> output. See more about these parameters in the wiki: >>>> >>>> - http://www.kamailio.org/wiki/cookbooks/3.3.x/core#memlog >>>> >>>> Run kamailio for a while in normal conditions, then restart it to >>>> get the memory usage summaries. There should be indication if there is some >>>> leak, by seeing memory chunks allocated many times from a function used at >>>> runtime. You can send the memory summary for a process here, we can look at >>>> it. >>>> >>>> >>>> >>>>> While this was running and Kamailio didn't respond to packets, it >>>>> logged lots of lines like this: >>>>> >>>> >>>> Do you have syslog to be configured in asynchronous mode? See the >>>> notes from: >>>> >>>> - http://www.kamailio.org/wiki/tutorials/3.2.x/syslog >>>> >>>> The memdbg is less than debug value, that means printing few log >>>> messages for each memory operation. You can make memdbg higher and rely on >>>> memlog for memory summaries, otherwise will be lot of log messages related >>>> to memory. >>>> >>>> >>>>> Jul 22 21:32:22 hostname kamailio: : <core> [mem/q_malloc.c:369]: >>>>> qm_malloc(0x4000e008, 128) called from <core>: cfg.lex: addstr(1438) >>>>> Jul 22 21:32:22 hostname kamailio: : <core> [mem/q_malloc.c:413]: >>>>> qm_malloc(0x4000e008, 128) returns address 0x40048918 frag. 0x40048900 >>>>> (size=128) on 1 -th hit >>>>> Jul 22 21:32:22 hostname kamailio: : <core> [mem/q_malloc.c:369]: >>>>> qm_malloc(0x4000e008, 128) called from <core>: cfg.lex: addstr(1438) >>>>> Jul 22 21:32:22 hostname kamailio: : <core> [mem/q_malloc.c:413]: >>>>> qm_malloc(0x4000e008, 128) returns address 0x400489c8 frag. 0x400489b0 >>>>> (size=128) on 1 -th hit >>>>> >>>> addstr() is a function used only for parsing configuration file, >>>> as long as you can still see them, the configuration file parsing was not >>>> finish. addstr() is not a source of leaks because it is not used at runtime. >>>> >>>> If you have large config file, then you can get close to the limits >>>> of the private memory, which is set to 4MB. You can increase its value >>>> using -M parameter (e.g., start kamailio with -M 8 to set it to use 8MB of >>>> memory). >>>> >>>> Over the time, the private memory can get used due to >>>> fragmentation, you can set the mem_join parameter in config file to avoid >>>> it (works when compiled with MEMDBG=1). >>>> >>>> To monitor usage of internal pkg memory, then you can use sercmd >>>> with pkg.stats command: >>>> >>>> >>>> http://kamailio.org/docs/modules/3.3.x/modules_k/kex.html#idp16972640 >>>> >>>> Shared memory stats are printed by 'kamctl fifo get_statistics >>>> shmem:' >>>> >>>> When you see significant increase of the memory usage, then you can >>>> restart to get the summaries. >>>> >>>> You should run these commands after start, just to see the initial >>>> usage of memory. >>>> >>>> Cheers, >>>> Daniel >>>> >>>> -- >>>> Daniel-Constantin Mierla - http://www.asipto.com >>>> http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda >>>> >>>> >>>> _______________________________________________ >>>> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing >>>> list >>>> sr-users(a)lists.sip-router.org >>>> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users >>>> >>> >>> >>> >>> -- >>> David Cunningham, Voisonics >>> http://voisonics.com/ >>> USA: +1 213 221 1092 <%2B1%20213%20221%201092> >>> UK: +44 (0) 20 3298 1642 <%2B44%20%280%29%2020%203298%201642> >>> Australia: +61 (0) 2 8063 9019 >>> >>> >>> -- >>> Daniel-Constantin Mierla - http://www.asipto.comhttp://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda >>> >>> >> >> >> -- >> David Cunningham, Voisonics >> http://voisonics.com/ >> USA: +1 213 221 1092 <%2B1%20213%20221%201092> >> UK: +44 (0) 20 3298 1642 <%2B44%20%280%29%2020%203298%201642> >> Australia: +61 (0) 2 8063 9019 >> >> >> -- >> Daniel-Constantin Mierla - http://www.asipto.comhttp://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda >> >> > > > -- > David Cunningham, Voisonics > http://voisonics.com/ > USA: +1 213 221 1092 <%2B1%20213%20221%201092> > UK: +44 (0) 20 3298 1642 <%2B44%20%280%29%2020%203298%201642> > Australia: +61 (0) 2 8063 9019 <%2B61%20%280%29%202%208063%209019> > > > -- > Daniel-Constantin Mierla - http://www.asipto.comhttp://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda > > -- David Cunningham, Voisonics http://voisonics.com/ USA: +1 213 221 1092 <%2B1%20213%20221%201092> UK: +44 (0) 20 3298 1642 Australia: +61 (0) 2 8063 9019