rrdtool(1): Add a pointer to the rrdcached(1) manpage.

diff --git a/doc/rrdtool.pod b/doc/rrdtool.pod
index 698340e..1175abc 100644 (file)
--- a/doc/rrdtool.pod
+++ b/doc/rrdtool.pod
@@ -302,10 +302,17 @@ sockets, tools like netcat, or in a quick interactive test by using
 B<NOTE:> that there is no authentication with this feature! Do not setup
 such a port unless you are sure what you are doing.
 
+=head1 RRDCACHED, THE CACHING DAEMON
+
+For very big setups, updating thousands of RRD files often becomes a serious IO
+problem. If you run into such problems, you might want to take a look at
+L<rrdcached(1)>, a caching daemon for RRDTool which may help you lessen the
+stress on your disks.
+
 =head1 SEE ALSO
 
 rrdcreate, rrdupdate, rrdgraph, rrddump, rrdfetch, rrdtune, rrdlast, rrdxport,
-rrdflush
+rrdflush, rrdcached
 
 =head1 BUGS