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Manjeet Chaudhary
manjeet at infogridpacific.com
Thu Jul 7 06:53:31 EDT 2005
Hi Nicolas > Could you be affected by this bug ? > http://issues.apache.org/jira/browse/MODPYTHON-1 We are not using any cyclic reference... > It is fixed in the current development version but still present in > the 3.1.4 version. Presently i am using patched version of mod_python-3.1.4. Two patches i used are : http://www.dscpl.com.au/projects/vampire/patches.html I found a new releases of mod_python after "ver 3.1.4"; "mod_python-3.2.0-experimental-release" and the "Current Development Version" on mod_python's subversion. Which one i should install. > Another possible memory leak (which is not confirmed yet) is the > PythonOption configuration directive : > http://issues.apache.org/jira/browse/MODPYTHON-60 > But apparently you are not using it. Yes we are not using PythonOption directive. I will retry using newer version of mod_python. Any other solution Thank you Manjeet Chaudhary > > Regards, > Nicolas > > 2005/7/7, Manjeet Chaudhary <manjeet at infogridpacific.com > <mailto:manjeet at infogridpacific.com>>: > > Hi Guys > > We are facing memory leak problem; most probably due to mod_python. > Our application is web-based application using below mentioned Apache > server version including mod-python. We are using Publisher > Handler in > mod-python. > We are facing a severe memory leak problem [ memory is used and never > being freed , it is freed only when we stop apache server (httpd) or > restart it]. We are using dbxml(2.1.8) as our backend database. Our > program (python module) in cgi-bin dir is processing the url request. > The module is accessing the document from the dbxml container through > Simple - XML -RPC communication and returning to the browser. As > the no. > of requests increases memory is used up [never freed again] and the > server crashes [CentOS automatically kill the process], but if we stop > or restart httpd the memory is released in huge amount . There were > similar problems in dbxml version 2.0.9 , but those were solved > when we > upgraded it to version 2.1.8. > > I have already updated my kernel, mod_python, dbxml. > I used Valgrind to check memory leak. But in summary report it is not > showing any type of memory leak. > > I also read that is there is some problem with Python and it's memory > management. ( http://evanjones.ca/python-memory.html ). Is this a > problem due to Python's memory management. But our other > application/servers are working fine. > > It seems that apache/mod_python process is leaking memory. > This is a serious problem and so we need a solution for it. > > Please help me out for solving this problem. > Maybe somebody here has any idea what is going on. > > Thank you in advance and all the best, > Manjeet Chaudhary > > Summary: > ----------------------------------------------------------- > ................. > Hardware/Softwares and OS we are using :- > Pentium4 machine with 1GB DDR-RAM. > CentOS 4.0 - kernel 2.6.9-11-EL. Upgraded from 2.6.9-3 > Dbxml - 2.1.8 upgraded from 2.0.9 > Mod_Python - 3.1.4 with Patches > Python - 2.3.4. > HTTPD server - Apache/2.0.52 > Pybsdbd - bsddb3-4.3.3 > ................. > Httpd Configurations: (mod_python specific. We are using .htaccess in > cgi-bin directory ) > > <Directory "/var/www/cgi-bin"> > AllowOverride FileInfo > Options FollowSymLinks > Order allow,deny > Allow from all > </Directory> > ................. > .htaccess file: > > AddHandler mod_python .py > SetHandler mod_python > PythonHandler mod_python.publisher > PythonDebug On > ................. > Remedies i applied: > 1. Updated Kernel from 2.6.9-3 to 2.6.9-11.EL as suggested in > http://lists.centos.org/pipermail/centos/2005-June/007113.html > <http://lists.centos.org/pipermail/centos/2005-June/007113.html> > 2. Updated DbXml from 2.0.9 to 2.1.8 as suggested in > http://www.sleepycat.com/xml_update/2.1.8/if.2.1.8.html > 3. Reinstalled mod_python with patches as mentioned in > http://www.dscpl.com.au/projects/vampire/patches.html > _______________________________________________ > Mod_python mailing list > Mod_python at modpython.org <mailto:Mod_python at modpython.org> > http://mailman.modpython.org/mailman/listinfo/mod_python > >
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