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=head2 PAUSE_LENGTH

=head2 $Dir::Flock::PAUSE_LENGTH

C<$Dir::Flock::PAUSE_LENGTH> is the average number of seconds that
the module will wait after a failed attempt to acquire a lock before
attempting to acquire it again. The default value is 0.001,
which is a good setting for having a high throughput when the
synchronized operations take a short amount of time. In contexts
where the synchronized operations take a longer time, it may
be appropriate to increase this value to reduce busy-waiting CPU
utilization.

=cut

# also under VARIABLES: HEARTBEAT_CHECK

# =head1 ENVIRONMENT    =>   DIR_FLOCK_DEBUG

# =cut