The limitation is in the implementation of Time::HiRes on Win32. You might find Re: Time::HiRes not that high on windows interesting. It doesn't add much over what tye has already said, but it might cause you to question what it is that you are after in trying for highly accurate timestamps.

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"Efficiency is intelligent laziness." -David Dunham
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In reply to Re: Time::Hires Granularity by BrowserUk
in thread Time::Hires Granularity by pseudosocrates

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