Eating memory

Robin Barker Robin.Barker at
Tue May 23 13:11:28 BST 2006

-----Original Message-----
From: Simon Wilcox [mailto:essuu at]
Sent: 23 May 2006 12:53
To: London PM
Subject: Eating memory

Sorry, I have a perl question :-)

I've been working on a simple script to munge some logs and produce some
stats but top suggests that it's loading the whole file into memory when I
think it should be working line by line. This is obviously not good when
there are gigs of logs to look through.

I've reduced the script to the simplest case but it is still not reading
the file line by line. I must be doing something stupid - can anyone see
what it is ?

#! /usr/bin/perl

use warnings;
use strict;

my $filename = $ARGV[0];

open INFILE, "$filename" or die "Can't open file : $!\n";

foreach (<INFILE>) {


	while(<INFILE>) {


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