Hi All,

I need your wisdom.

In my script I read some data to the hash (hash of arrays). It is quite big and takes around 1 GB of memory. Then I start reading another file line by line and if some data match to the hash key it is printed out.

!!!! As soon as I start printing things memory consumption grows like crazy resulting in "out of memory" error. Total amount of memory on the working machine is 4Gb.

How to reduce memory usage?

*** Solved! See my comment underneath. ***

My script looks like that:

#####################
my %hash = get_hash();

open(IN, "$in");
open(OUT1, "> $out1");
open(OUT2, "> $out2");
open(OUT3 ,"> $out3");

while (<IN>) {
    my @data = split /\s+/, $_;

    if (defined($hash{$data[0]})) {
        print OUT1 "$data[0]\n";
        print OUT2 join("\t", @data[1..$#data]) ."\n";
        print OUT3 join("\t", @{$hash{$data[0]}}) ."\n";
    }
}

[download]

Thank you in advance!

Best,

Mike

In reply to Memory consumption by pachkov

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