# perldoc > SLEEP

## Found in /usr/share/perl/5.34/pod/perlfaq8.pod
  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](https://www.chedong.com/phpMan.php/perldoc/Time%3A%3AHiRes/markdown) and the
    [BSD::Itimer](https://www.chedong.com/phpMan.php/perldoc/BSD%3A%3AItimer/markdown) modules (available from CPAN, and starting from Perl 5.8
    [Time::HiRes](https://www.chedong.com/phpMan.php/perldoc/Time%3A%3AHiRes/markdown) is part of the standard distribution).