I cannot discern what is eating your memory, but one thing you should do is move your variables declarations into the smallest possible scope. This will remove a lot of cruft from your code which may make it easier to spot the issue.

Eg: 

my $shapefile = Geo::ShapeFile->new ("tabblock2010_42_pophu");
my $totalblocks = $shapefile->shapes();
for (1 .. $totalblocks) {
    my %attr = $shapefile->get_dbf_record($_);
    my $blockid = $attr{BLOCKID10};
    ...

[download]
Removing the declarations in the main package, and the statements to clear the variables at the bottom of your loop.

Hope this helps !


The way forward always starts with a minimal test.

In reply to Re: Geo::ShapeFile memory problem by 1nickt
in thread Geo::ShapeFile memory problem by rhzhang

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