How do I sleep for a millisecond in Perl

Question

How do I sleep for shorter than a second in Perl

User · Answer

From perlfaq8     How can I sleep   or alarm   for under a second   If you want finer granularity than the 1 second that the sleep   function provides  the easiest way is to use the select   function as documented in select in perlfunc  Try the Time  HiRes and the BSD  Itimer modules  available from CPAN  and starting from Perl 5 8 Time  HiRes is part of the standard distribution

User · Answer

system  sleep 0 1     does the trick

User · Answer

Use Time  HiRes

User · Answer

A quick googling on  perl high resolution timers  gave a reference to Time  HiRes  Maybe that it what you want

User · Answer

From the Perldoc page on sleep      For delays of finer granularity than one second  the Time  HiRes module  from CPAN  and starting from Perl 5 8 part of the standard distribution  provides usleep      Actually  it provides usleep    which sleeps in microseconds  and nanosleep    which sleeps in nanoseconds   You may want usleep    which should let you deal with easier numbers  1 millisecond sleep  using each    use strict  use warnings   use Time  HiRes qw usleep nanosleep      1 millisecond    1000 microseconds usleep 1000     1 microsecond    1000 nanoseconds nanosleep 1000000     If you don t want to  or can t  load a module to do this  you may also be able to use the built-in select   function     Sleep for 250 milliseconds select undef  undef  undef  0 25

User · Answer

Time  HiRes     use Time  HiRes    Time  HiRes  sleep 0 1     1 seconds   Time  HiRes  usleep 1     1 microsecond    http   perldoc perl org Time HiRes html

[perl] How do I sleep for a millisecond in Perl?

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