Hi Monks,

With 64bit strawberry Perl on windows, when I have very large scalars, I notice that the RAM usage is twice as high as I would expect.

A basic example is:

use Devel::Size qw(total_size);
$x = 'a' x (2**32);  # 4GiB
print total_size($x) . "\n";
sleep 60;

[download]

The output is 4294967330, however the windows commit and active working set for perl.exe is 8GiB. Devel::Peek also reports 4GiB for the SV len... ?

In reply to Memory usage double expected by sectokia

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