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From "Fred Moyer" <>
Subject Re: mod_perl and 64-bit linux
Date Wed, 01 Dec 2004 21:25:44 GMT
> I am considering upgrading to a 64-bit Opteron-based machine running RH
> linux. Using perl 5.8, apache 2, mod_perl. Has anyone run into any
> problems running their mod_perl applications on a 64-bit box with a
> 64-bit linux OS?

I ran a mission critical web-app using Apache2/mod_perl2, and an sql
database on Opteron using FC2 with non-threaded perl 5.8.5.  I built
apache, mod_perl, and perl from source.    We didn't have any 64-bit
related problems with the web app.  The opteron is a very fast machine.

Now, to go off the mod_perl topic for a few sentences, we did experience
some crashes due to i/o intensive batch operations.  The code was opening
thousands of file handles very quickly.  I found one relevant link on
google which unfortunately I don't have access to anymore, but it cited a
crash occurring while using bonnie++ for benchmarking on opteron.

We had another issue with occasional segfaults of long running (7+ days)
programs which consumed enormous (15G+) amounts of memory.  Suffice to say
though, we were going beyond normal usage, and encountered a few dragons.

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