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 Topic: Memory bloat on file upload with mod_fcgid + PHP |
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abhaga
Joined: 09 Sep 2010
Posts: 2
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 Posted: Thu 09 Sep '10 7:32 Post subject: Memory bloat on file upload with mod_fcgid + PHP |
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Hi,
I am running Apache 2.2.14/mod_fcgid 2.3.5 with PHP 5.2.6 in a openVZ based VPS. OS is Ubuntu Jaunty Server edition.
When a user uploads a file, for the duration of upload the apache process size remains fairly constant but right at the end of the request, it goes up by almost 4 times the file size. It seems like there is memory leak somewhere right at the end of request processing. I have tried setting different mod_fcgid params to no avail.
The same combination of Apache and mod_fcgid works fine on my local machine, a desktop Ubuntu Lucid - the process size never blows up. I have PHP 5.3 locally but as per my understanding, that should not matter.
Any pointers on how to resolve this would be really useful.
Regards,
Abhaya |
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James Blond
Moderator
Joined: 19 Jan 2006
Posts: 7371
Location: Germany, Next to Hamburg
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| Posted: Thu 09 Sep '10 17:53 Post subject: |
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| Do you have the same php setting on both servers? Do you use both time the same mpm? |
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abhaga
Joined: 09 Sep 2010
Posts: 2
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| Posted: Thu 09 Sep '10 22:32 Post subject: |
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I am using worker MPM at both the palces.
Regarding PHP, as I mentioned the versions are different but the setup is more or less similar - it runs as a fastcgi separate process, uses APC. The memory usage of this process remains constant. It is the apache process handling the upload that blows up in size.
Could it have something to do with openVZ? The consumption increases right at the end of upload - right when data would be sent to fastcgi process through IPC.
Abhaya |
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