=head2 Plugin C<grpc>
-The I<grpc> plugin provides an RPC interface to submit values to collectd
-based on the open source gRPC framework. It exposes and end-point for
-dispatching values to the daemon.
+The I<grpc> plugin provides an RPC interface to submit values to or query
+values from collectd based on the open source gRPC framework. It exposes and
+end-point for dispatching values to the daemon.
The B<gRPC> homepage can be found at L<https://grpc.io/>.
The argument I<Host> may be a hostname, an IPv4 address, or an IPv6 address.
+=item B<WorkerThreads> I<Num>
+
+Number of threads to start for handling incoming connections. The default
+value is B<5>.
+
=back
=head2 Plugin C<hddtemp>