What Perl version? Before 5.18 with hash randomization or more recent?
This was in feb 2013, so I presume just before 5.18.0, which fixed this issue.

Dave.

In reply to Re^10: Our perl/xs/c app is 30% slower with 64bit 5.24.0, than with 32bit 5.8.9. Why? by dave_the_m
in thread Our perl/xs/c app is 30% slower with 64bit 5.24.0, than with 32bit 5.8.9. Why? by Anonymous Monk

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