index 7adfad05e002551d2586d4a971a9ea5968662beb..d13a76ad04204ac3606a5e42e9bcc76c3328d3c4 100644 (file)
--- a/NEWS
+++ b/NEWS
-RRDTOOL NEWS
-============
+News for RRDtool 1.4
+====================
+$Id$
-x
+RRD Caching Daemon (rrdcached)
+------------------------------
+by Florian Forster and Kevin Brintnall
-In this file I am noting the Major changes to rrdtool
-for details check the cvs ChangeLog
+The RRD Caching Daemon can dramatically improve the 'update' performance
+of your system. Due to filehandling overheads, the time it takes todo one
+update is virtually the same as to doing two updates in a row.
-2001/03/07 Tobias Oetiker <oetiker@ee.ethz.ch>
- Integrated complete rewrite of rrdgraph documentation by
- Alex van den Bogaerdt <alex@slot.hollandcasino.nl>. THis also contains
- info on his planned changes to the rrdgraph module
+The Cache Daemon intercepts rrdtool update calls, assembling multiple
+updates before writing them to the actual rrd file. When calling rrdtool
+graph in such a setup, the command will tell the daemon to flush out all
+pending updates for the rrd files, required to draw the graph.
-2001/03/02 Tobias Oetiker <oetiker@ee.ethz.ch>
- Added Aberrant Patch from Jake Brutlag <jakeb@microsoft.com>
- From now one, new rrd files use version tag 0002. They can
- NOT be read by the old 1.0.x rrdtools
- Jack:
- Aberrant Behavior Detection support. A brief overview added to
- rrdtool.pod. Major updates to rrd_update.c, rrd_create.c. Minor update to
- other core files. Updated documentation: rrdcreate.pod, rrdgraph.pod,
- rrdtune.pod. This is backwards compatible! See
- http://cricket.sourceforge.net/aberrant/rrd_hw.htm
+RRD Dumping and Restoring (rrdtool dump/restore)
+------------------------------------------------
+by Tobi Oetiker
+The output of rrdtool dump has been adjusted to be simpler to parse by
+existing xml parsers.
+
+The restore core has been completely re-written yet again and is now relying
+on an incremental xml parser. This has the advantage that the memory
+consumtion while restoring xml files is only slighly larger than the
+resulting rrd file. Which is much less than the requirements of the 1.3.
+
+RRD Graphing functions (rrdtool graph)
+--------------------------------------
+by Martin Sperl
+
+* VDEF PERCENTNAN (a PRECENT that ignores NAN)
+
+* CDEF PREDICT and PREDICTSIGMA functions for on-the-fly
+ data prediction without the need to modify existing rrd files as it is
+ required for HoltWinters.
+
+* LibDBI integration provides a path to read data directly of a supported
+ SQL database into rrdtool graph.
+
+Miscellaneous Changes
+---------------------
+
+* graph legends can now be placed left, right or above the graph with the
+ new --legend-direction and --legend-positon placement options.
+ by Melchior Rabe
+
+* switched to using automake 1.11 which provides a 'silent' build process,
+ causing errors and warnings to stand out much more than before.
+ by Tobi Oetiker
+
+* switched from intltoolize to autopoint for the i18n configuration.
+ by Tobi Oetiker
+
+* lua bindings for rrdtool
+ by Fidelis Assis
+
+* various improvements to rrd_open functions and mmap handling
+ by Daniel Pocock
+
+* allow the HW smoothing window size to be set to 0 with rrdtool tune
+ by sylvain luiset
+
+* new graph option --border to set the 3d border width
+ by Bernhard Reutner-Fischer
+
+* draw different color swats depending on the type of line drawn in the
+ graph by Loïc Tortay
+
+for more detail see the CHANGES file.