You cannot use gettimeofday to measure how long you sleep since a call to that function by itself takes too long for your needs.
my @first = gettimeofday;
my @second = gettimeofday;
say "[@first] [@second] ", $second[1]-$first[1];

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Output:
[1345208919 179070] [1345208919 179072] 2

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In reply to Re: How to sleep 1 microsecond? by lidden
in thread How to sleep 1 microsecond? by sophate

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