I'm trying to profile my application's memory usage, but it's not working. Basically, I just want to list all variables, sorted on which uses the most memory. This is the current function I've developed, but it doesn't work. It hangs, and I cannot quite understand why. 
sub profile_memory {

    use Devel::Gladiator ();
    use Devel::Size ();
    use Data::Dumper qw(Dumper);
    use Scalar::Util ();

    open(my $fh,">>/tmp/memory_profile_$$.log");

    my $all=Devel::Gladiator::walk_arena();
    my $size_hash={};
    foreach my $sv ( @$all ) {
        next if Scalar::Util::refaddr($sv) == Scalar::Util::refaddr($a
+ll);
        next if Scalar::Util::refaddr($sv) == Scalar::Util::refaddr($s
+ize_hash);
        next if Scalar::Util::refaddr($sv) == Scalar::Util::refaddr($f
+h);
        next if ref($sv) eq 'GLOB'; # Devel::Size segfaults on this
        my $size=0;
        eval {
            #warn(ref($sv)) unless ref($sv) eq 'SCALAR';
            $size=Devel::Size::size($sv);
            #$size=Scalar::Util::refaddr($sv);
        };
        next if $@;
        my $sv_list=$size_hash->{$size} || [];
        next if Scalar::Util::refaddr($sv) == Scalar::Util::refaddr($s
+v_list);
        push @$sv_list, $sv;
        $size_hash->{$size}=$sv_list;
    }

    print $fh ( "-" x 80 ) . "\n";
#    print $fh Dumper($size_hash);
    foreach my $size ( sort { $b <=> $a } keys %$size_hash ) {
    foreach my $size ( keys %$size_hash ) {
        print $fh $size . '=[';
        foreach my $sv ( @{ $size_hash->{$size} } ) {
            print $fh ref($sv) . ", ";
        }
        print $fh ']' . "\n";
    }

    close($fh);

    return 1;
}

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In reply to Trying to profile my app's memory usage by robins

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