I have found that the data hash that is tie()d with <cpan//Tie::Persistent> is using up so much memory when it contains a lot of data. The funny thing is, even if I tie the data to a local hash, the memory is still allocated and not freed again. E. g.:
sub loadData {
    my $file = shift;
    my %localhash = ();
    tie %localhash , 'Tie::Persistent', $file , 'rw';
    untie %localhash;
}

[download]

Maybe I don't understand how perl counts references, but in my view that %localhash is a goner.

In reply to Re^4: modularization, memory usage and performance by jmagiera
in thread modularization, memory usage and performance by jmagiera

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