X-Git-Url: https://git.octo.it/?p=rrdtool.git;a=blobdiff_plain;f=doc%2Frrdtool.pod;h=73fc34a7ed91b7adee20c2b74c724e30b3c55043;hp=0f41607aa1040127a3ae8411f0aba16991fa548c;hb=b69a1a9abc9afdc2bfb23b84e28c2afb0b1a5e09;hpb=342b22c3e74a10d7049285c2cea7383676bcfc95

diff --git a/doc/rrdtool.pod b/doc/rrdtool.pod
index 0f41607..73fc34a 100644
--- a/doc/rrdtool.pod
+++ b/doc/rrdtool.pod
@@ -34,10 +34,10 @@ While the man pages talk of command line switches you have to set in
 order to make B<RRDtool> work it is important to note that
 B<RRDtool> can be remotely controlled through a set of pipes. This
 saves a considerable amount of startup time when you plan to make
-B<RRDtool> do a lot of things quickly. Check the section on L<"Remote
-Control"> further down. There is also a number of language bindings
-for RRDtool which allow you to use it directly from perl, python, tcl,
-php, etc.
+B<RRDtool> do a lot of things quickly. Check the section on L<Remote_Control>
+further down. There is also a number of language bindings
+for RRDtool which allow you to use it directly from Perl, python, Tcl,
+PHP, etc.
 
 =over 8
 
@@ -91,7 +91,11 @@ Change the size of individual RRAs. This is dangerous! Check L<rrdresize>.
 
 =item B<xport>
 
-Export data retrieved from one or several RRDs. Check L<rrdxport>
+Export data retrieved from one or several RRDs. Check L<rrdxport>.
+
+=item B<flush>
+
+Flush the values for a specific RRD file from memory. Check L<rrdflush>.
 
 =item B<rrdcgi>
 
@@ -111,7 +115,7 @@ data available at a constant time interval. Unfortunately, you may not
 always be able to fetch data at exactly the time you want
 to. Therefore B<RRDtool> lets you update the logfile at any time you
 want. It will automatically interpolate the value of the data-source
-(B<DS>) at the latest official time-slot (intervall) and write this
+(B<DS>) at the latest official time-slot (interval) and write this
 interpolated value to the log. The original value you have supplied is
 stored as well and is also taken into account when interpolating the
 next log entry.
@@ -260,14 +264,14 @@ accepts the same arguments as on the command line and some special
 commands like B<quit, cd, mkdir> and B<ls>. For detailed help on the
 server commands type:
 
-   rrdtool help cd|mkdir|ls|quit
+   rrdtool help cd|mkdir|pwd|ls|quit
 
 When a command is completed, RRDtool will print the string  'C<OK>',
 followed by timing information of the form B<u:>I<usertime>
 B<s:>I<systemtime>. Both values are the running totals of seconds since
 RRDtool was started. If an error occurs, a line of the form 'C<ERROR:>
 I<Description of error>' will be printed instead. B<RRDtool> will not abort,
-unless something realy serious happens. If
+unless something really serious happens. If
 a B<workdir> is specified and the UID is 0, RRDtool will do a chroot to that
 workdir. If the UID is not 0, RRDtool only changes the current directory to
 B<workdir>.
@@ -291,16 +295,24 @@ I</etc/inetd.conf>. For example:
 Don't forget to create the database directory /var/rrd and
 reinitialize your inetd.
 
-If all was setup correctly, you can access the server with perl
+If all was setup correctly, you can access the server with Perl
 sockets, tools like netcat, or in a quick interactive test by using
 'telnet localhost rrdsrv'.
 
 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>, 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
+rrdcreate, rrdupdate, rrdgraph, rrddump, rrdfetch, rrdtune, rrdlast, rrdxport,
+rrdflush, rrdcached
 
 =head1 BUGS