=back
+=head2 Plugin C<gmond>
+
+The I<gmond> plugin received the multicast traffic sent by B<gmond>, the
+statistics collection daemon of Ganglia. Mappings for the standard "metrics"
+are built-in, custom mappings may be added via B<Metric> blocks, see below.
+
+Synopsis:
+
+ <Plugin "gmond">
+ MCReceiveFrom "239.2.11.71" "8649"
+ <Metric "swap_total">
+ Type "swap"
+ TypeInstance "total"
+ DataSource "value"
+ </Metric>
+ <Metric "swap_free">
+ Type "swap"
+ TypeInstance "free"
+ DataSource "value"
+ </Metric>
+ </Plugin>
+
+The following metrics are built-in:
+
+=over 4
+
+=item *
+
+load_one, load_five, load_fifteen
+
+=item *
+
+cpu_user, cpu_system, cpu_idle, cpu_nice, cpu_wio
+
+=item *
+
+mem_free, mem_shared, mem_buffers, mem_cached, mem_total
+
+=item *
+
+bytes_in, bytes_out
+
+=item *
+
+pkts_in, pkts_out
+
+=back
+
+Available configuration options:
+
+=over 4
+
+=item B<MCReceiveFrom> I<MCGroup> [I<Port>]
+
+Sets sets the multicast group and UDP port to which to subscribe.
+
+Default: B<239.2.11.71>E<nbsp>/E<nbsp>B<8649>
+
+=item E<lt>B<Metric> I<Name>E<gt>
+
+These blocks add a new metric conversion to the internal table. I<Name>, the
+string argument to the B<Metric> block, is the metric name as used by Ganglia.
+
+=over 4
+
+=item B<Type> I<Type>
+
+Type to map this metric to. Required.
+
+=item B<TypeInstance> I<Instance>
+
+Type-instance to use. Optional.
+
+=item B<DataSource> I<Name>
+
+Data source to map this metric to. If the configured type has exactly one data
+source, this is optional. Otherwise the option is required.
+
+=back
+
+=back
+
=head2 Plugin C<hddtemp>
To get values from B<hddtemp> collectd connects to B<localhost> (127.0.0.1),
=head2 Plugin C<ping>
+The I<Ping> plugin starts a new thread which sends ICMP "ping" packets to the
+configured hosts periodically and measures the network latency. Whenever the
+C<read> function of the plugin is called, it submits the average latency, the
+standard deviation and the drop rate for each host.
+
+Available configuration options:
+
=over 4
=item B<Host> I<IP-address>
Host to ping periodically. This option may be repeated several times to ping
multiple hosts.
+=item B<Interval> I<Seconds>
+
+Sets the interval in which to send ICMP echo packets to the configured hosts.
+This is B<not> the interval in which statistics are queries from the plugin but
+the interval in which the hosts are "pinged". Therefore, the setting here
+should be smaller than or equal to the global B<Interval> setting. Fractional
+times, such as "1.24" are allowed.
+
+Default: B<1.0>
+
+=item B<Timeout> I<Seconds>
+
+Time to wait for a response from the host to which an ICMP packet had been
+sent. If a reply was not received after I<Seconds> seconds, the host is assumed
+to be down or the packet to be dropped. This setting must be smaller than the
+B<Interval> setting above for the plugin to work correctly. Fractional
+arguments are accepted.
+
+Default: B<0.9>
+
=item B<TTL> I<0-255>
Sets the Time-To-Live of generated ICMP packets.