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Date: Sun, 10 Apr 2011 20:24:50 -0500
Message-ID: <BANLkTinuPf0Otgw7cXBrpjmo+zEC7W59nA@mail.gmail.com>
Subject: Apache2::SizeLimit and x64_86
From: E R <pc88mxer@gmail.com>
To: modperl <modperl@perl.apache.org>
Content-Type: text/plain; charset=ISO-8859-1

Hi all,

On x86_64 I noticed that perl .so files (XS modules) appear to use a
lot more memory than they do on 32-bit architectures.

In particular, /proc/$$/smaps reports a ~ 2MB segment associated with
the .so library that is not reported in the 32-bit case.
For more details, see my posting to the Centos mailing list:
http://lists.centos.org/pipermail/centos/2011-April/109530.html

My questions are:

- Does this represent real (physical) memory usage?

- Apache2::SizeLimit seems to be including these segments in its size
calculation. Is there a way to have Apache2::SizeLimit ignore them?

Thanks,
ER