FAQ 8.17 How can I measure time under a second?

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8.17: How can I measure time under a second?


(contributed by brian d foy)

The "Time::HiRes" module (part of the standard distribution as of Perl
5.8) measures time with the "gettimeofday()" system call, which returns
the time in microseconds since the epoch. If you can't install
"Time::HiRes" for older Perls and you are on a Unixish system, you may
be able to call gettimeofday(2) directly. See "syscall" in perlfunc.



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