=head1 SYNOPSIS
-B<rrdcached> [B<-l/-L> I<address>] [B<-w> I<timeout>] [B<-z> I<delay>] [B<-f> I<timeout>] [B<-j> I<dir>] [-F] [B<-b> I<dir> [B<-B>]]
+B<rrdcached> [B<-l/-L> I<address>] [B<-w> I<timeout>] [B<-z> I<delay>] [B<-f> I<timeout>] [B<-t> I<write_threads>] [B<-j> I<dir>] [-F] [B<-b> I<dir> [B<-B>]]
=head1 DESCRIPTION
Sets the name and location of the PID-file. If not specified, the default,
C<I<$localststedir>/run/rrdcached.pid> will be used.
+=item B<-t> I<write_threads>
+
+Specifies the number of threads used for writing RRD files. The default
+isE<nbsp>4. Increasing this number will allow rrdcached to have more
+simultaneous I/O requests into the kernel. This may allow the kernel to
+re-order disk writes, resulting in better disk throughput.
+
=item B<-j> I<dir>
Write updates to a journal in I<dir>. In the event of a program or system