The problem with the Unix time command is that it is not very reliable for very short processes: 

$ time perl -c -e'use posix; 1;'
-e syntax OK

real    0m0.211s
user    0m0.015s
sys     0m0.077s
~
$ time perl -c -e'use posix; 1;'
-e syntax OK

real    0m0.093s
user    0m0.015s
sys     0m0.077s

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In reply to Re: How can one best measure compile time of their Perl script? by Laurent_R
in thread How can one best measure compile time of their Perl script? by taint

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