Perl weak references are implemented as a singly-linked list. Destroying a weak reference is thus O(n) if you have n weak references to a particular variable. So destroying N weak references to the same variable is O(N**2).

Having 200k weak references to the same variable is not a normal use-case. I'm not surprised that it is slow.

- tye        

In reply to Re: Slow GC after Scalar::Util::weaken (O) by tye
in thread Slow GC after Scalar::Util::weaken by jura05

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