I realise that this isn't what you're asking, but it seemed a relevant place to post this link.

With mod_perl, it is very useful to know how much memory in each child process is shared with the other processes. Having this knowledge makes it easier to calculate the maximum number of processes you can run without starting to swap. On linux, it is also difficult to assess, because top doesn't take Perl's copy-on-write into account.

This script (smem.pl) uses Linux::Smaps (linux >= 2.6.14) to report what memory in use by a process is shared or private, and clean or dirty. The author has posted a blog entry about using smem.pl.

Apologies for hijacking your question, but I thought it worth posting this script to PM.

Clint

In reply to Re: Profiling memory by clinton
in thread Profiling memory by kyle

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