⭐ in reply to How do I find the memory used by a particular hash (NOT including perl itself)?

Use the Devel::Size module.

For example, to determine the amount of memory in bytes used by a hash named %hash:

use Devel::Size qw(total_size);
my $memory_used = total_size(\%hash);

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If the hash contains any references to other variables, the memory those variables use will be added as well.

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