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The performance of the blessed hash case is dependent on the length of the keys used in the hash: The longer the key, the more time it takes!

For one-character keys, blessed hashes are slightly faster than the cached refaddr case. (I got 2% when I did the timings.) However, one-character keys are rather unrealistic, and definitely not good programming practice.

For two-character keys, the performance is the same.

For three or more characters, cached refaddr is faster! I think five characters is realistic, and their performance is 2% slower. For ten characters, 7% slower!

So if I were to call a winner, cached refaddr would be it.

On another minor note, 0+$self yields the same result as the refaddr function. So you can eliminate 'use Scalar::Util', and just cache 0+$self.


Remember: There's always one more bug.

In reply to Re^4: Threads and fork and CLONE, oh my! by jdhedden
in thread Threads and fork and CLONE, oh my! by xdg

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