Hello, On 05/19/2009 04:25 PM, Christian Koch wrote: > Hello Daniel, > > Daniel-Constantin Mierla schrieb: > >>> we're using kamailio 1.5.1 with modules htable and perl to generate >>> CDRs. Using htable we save some variables which are dumped to file >>> using the perl module at the end of the call. >>> We did a small stress test with 5 calls in parallel (each call about >>> 20 seconds) and we got after about 6 hours the following error: >>> >>> ERROR:core:pv_sprintf: pv_sprintf: Memory exhausted! >>> >>> >> this is system memory error. Has nothing to do with pkg memory used by >> Kamailio. Seems that perl module allocates some memory and forgets to >> free it. Do you see other errors in your syslog? >> >> One memleak I could spot is that the allocated buffer to print the >> output in pv_sprintf is not freed if the formatted string is bad. Then >> I see that the output buffer is duplicated with strdup and it is >> freed. So seems there are some system memory leaks in perl module, >> indeed. >> > Are you sure this is system memory? you are right, somehow I was blind when I checked the pv_sprintf, it is clear pkg_malloc().
> We changed PKG_MEM_POOL_SIZE from 4 > to 8MB and a stress test didn't show any problems for more then 12 > hours. Then we changed it to 0.5MB and the problem occured after about 3 > hours again wiht the same error message. > The error message in pv_sprintf() occurs when pkg_malloc() returns NULL, > so this should be a PKG issue?!? > Currently we're running a test with 0.5MB of pkg memory, but we've fixed > the error in pv_sprintf where the format is wrong and the buffer is not > freed. In the test this morning (with 0.5MB) we had the message "wrong > format" only once, and in all the other tests the message didn't show > up. So we don't think this fixes the problem. > Do you think only one missing pkg_free() (like in the last test) can > corrupt the memory so this error occurs? > Now that the issue is pkg, you can compile and run in mem debug mode so we can detect easier where the leak is, check this: http://www.kamailio.org/dokuwiki/doku.php/troubleshooting:memory Cheers, Daniel -- Daniel-Constantin Mierla http://www.asipto.com/ _______________________________________________ Kamailio (OpenSER) - Users mailing list Users@lists.kamailio.org http://lists.kamailio.org/cgi-bin/mailman/listinfo/users http://lists.openser-project.org/cgi-bin/mailman/listinfo/users
