/usr/bin/perl -w /tmp/diff.pl hash_grep: *CMP::hash_grep hash_key_diff: *CMP::hash_key_diff hash_values_diff: *CMP::hash_values_diff using_vec: *CMP::using_vec Rate using_vec hash_values_diff hash_key_diff hash_grep using_vec 22269/s -- -85% -90% -91% hash_values_diff 148869/s 568% -- -31% -40% hash_key_diff 215078/s 866% 44% -- -13% hash_grep 247455/s 1011% 66% 15% --