Your benchmark code is wrong. You call each of your coderefs instead of passing them. You meant instead something like this: 

cmpthese( 500_000, {
  statreuse => $coderef,
  nostatreuse => $coderef1,
});

[download]

With working benchmark code I see the _ version running 78% faster than the separate calls.

Update: Meh, typo'd the percentage faster. Actual results running 500,000 tests with test.lnk being a plain file: 

                Rate nostatreuse   statreuse
nostatreuse  65189/s          --        -44%
statreuse   116279/s         78%          --

Results from stock OS X perl v5.8.6 on a dual 2.7 G5.

In reply to Re: Use of undescore to reuse file stat data is slower by Fletch
in thread Use of undescore to reuse file stat data is slower by Anonymous Monk

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