My guess is that you're doing something like 

sub is_useful;

open $fh, '<', 'purr' or die "Sad kitty: $!";
my @useful_things = ();
while(<$fh>){
    push @useful_things if is_useful( $_ );
}

[download]

So all that data is ending up stashed in memory, even though you're reading the file a line at a time.

@_=qw; ask f00li5h to appear and remain for a moment of pretend better than a lifetime;;s;;@_[map hex,split'',B204316D8C2A4516DE];;y/05/os/&print;

In reply to Re: Parsing very big files GB by f00li5h
in thread Parsing very big files GB by rootcho

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