--- IO-AIO/AIO.pm	2011/05/19 23:57:12	1.191
+++ IO-AIO/AIO.pm	2011/05/20 00:00:03	1.192
@@ -1419,6 +1419,13 @@
 will still be ready when C<poll_cb> returns, so normally you don't have to
 do anything special to have it called later.
 
+Apart from calling C<IO::AIO::poll_cb> when the event filehandle becomes
+ready, it can be beneficial to call this function from loops which submit
+a lot of requests, to make sure the results get processed when they become
+available and not just when the loop is finished and the event loop takes
+over again. This function returns very fast when there are no outstanding
+requests.
+
 Example: Install an Event watcher that automatically calls
 IO::AIO::poll_cb with high priority (more examples can be found in the
 SYNOPSIS section, at the top of this document):