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Eugene Morozov
usenet at eugenemorozov.name
Thu Feb 15 23:54:51 EST 2007
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hello, No, this figure is the initial starting size and it doesn't grow at all with time. We currently have two virtual hosts running. I don't think it's really a problem, just wanted to know if such initial memory consumption is normal or not. Can anyone else post their figures? Eugene Graham Dumpleton пишет: > Eugene Morozov wrote .. >> -----BEGIN PGP SIGNED MESSAGE----- >> Hash: SHA1 >> >> Hello, >> We're using apache and mod_python for running Pylons-based CMS. We're a >> little bit concerned with memory usage. With mod_python >> apache2-mpm-worker consumes a lot of memory: >> >> PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND >> 23787 www-data 20 0 366m 48m 4104 S 0.0 12.5 0:09.23 apache2 >> >> 48Mb is a bit too big even for apache. And why it needs 366Mb of virtual >> memory? >> >> If I disable mod_python these values are cut significantly (to 266Mb >> virtual and 21Mb RSS, which is still much, it seems). >> >> Not that it's a huge problem now, but I'm curious why so much memory is >> consumed. > > What are the figures immediately after Apache has started and before any requests > have been handled by mod_python? When determining this, ensure that not > PythonImport directives are being applied to preload/execute any Python code. > > This figure will be the initial starting size with only the main Python interpreter > instance created. Beyond that, the size will grow based on what your own Python > code is doing, how many additional Python interpreter instances are created or > possibly due to memory leaks. > > As far as memory leaks in mod_python go, ensure that you are using the latest > version of mod_python, ie., 3.3. There are memory leaks in older versions which > depending on what your code is doing may be getting triggered. > > As to Python interpreter instances, how many virtual hosts are you running on > the server under which mod_python requests are being handled? Also, are you > using any of PythonInterpPerDirectory or PythonInterpPerDirective or > PythonInterpreter directives? If you are using these and depending on how > you use them, you could be unnecessarily creating additional Python interpreter > instances which may be unnecessarily consuming additional memory. > > Finally, does this figure keep going up and up over time which may indicate > memory leaks in mod_python or your own Python code? > -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.3 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFF1Tkak5VH2F5tiW4RAku7AKDRVyEqXh3JFyj3SCbJ40P+yirzEwCgs65e jDg69zy25rbK6lb/Jt8G36c= =23AR -----END PGP SIGNATURE-----
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