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If you are on a modern operating system, you cannot do that reliably. Any kind of sleep call is likely to trigger a task switch where the OS puts your process in the background executes another one. And even if you don't sleep, that can still happen.

If you absolutely need such exact timings (what for?) consider using a real-time operating system, and probably not Perl either (Perl does some stuff under the hood that can be harmful when you need exact timings. Examples are re-hashing of hash tables, and freeing variables on scope exit).


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

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    [1nickt]: my $x = $aohoaoh->[0]->{' foo'}->[0]->{'bar' }; should work
    [thepkd]: not indexing
    [thepkd]: getting data out of the ds
    [choroba]: it depends. Give more details, please
    [thepkd]: i used a series of {}'s but it dont work
    [choroba]: You need square brackets for arrays
    [GotToBTru]: you can certainly construct a single expression to access any part of the data structure, without using temp variables. but you might make it easier on yourself and any other poor soul who has to understand your code if you do
    [thepkd]: to dereference i mean
    LanX .oO( oh tempz, oh moretz)
    [thepkd]: @GotToBTru Sure. But.

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