rrdtool info --daemon unix:/var/run/rrdcached.sock /var/lib/rrd/foo.rrd
+=item B<--noflush>
+
+Omit the C<flush> command usually sent to the daemon prior to retrieving the
+data. If all you are interested in the the RRD Structure, and not the last update
+time or current values, then this will improve efficiency.
+
=back
=head1 EXAMPLE
rrd_version = "0001"
step = 300
last_update = 955892996
+ header_size = 2872
ds[a].type = "GAUGE"
ds[a].minimal_heartbeat = 600
ds[a].min = NaN