collectd-perl(5): Mention that $interval_g should not be used.

diff --git a/src/collectd-perl.pod b/src/collectd-perl.pod
index a19274e4278030c0e90fad3d4ed8bbdbcab78c9f..9a52972d7c4b6d8245f30e3b45f89113483122d6 100644 (file)
--- a/src/collectd-perl.pod
+++ b/src/collectd-perl.pod
@@ -501,6 +501,11 @@ B<FQDNLookup> configuration options (see L<collectd.conf(5)> for details).
 This variable keeps the interval in seconds in which the read functions are
 queried (see the B<Interval> configuration option).
 
+B<Note:> This variable should no longer be used in favor of
+C<plugin_get_interval()> (see above). This function takes any plugin-specific
+interval settings into account (see the C<Interval> option of C<LoadPlugin> in
+L<collectd.conf(5)> for details).
+
 =back
 
 Any changes to these variables will be globally visible in collectd.