RRDTOOL NEWS
============
+Major Changes between 1.0.x and 1.2.x
+Graphing
+--------
-In this file I am noting the Major changes to rrdtool
-for details check the cvs ChangeLog
+* rewritten graphics generation based on libart.
+ - antialiased output
+ - alpha transparency support
+ - truetype fonts
+
+* additional graphics formats: EPS, PDF, SVG
+
+* extended multipart documentation
+
+* VDEF support; define and use variables. Find, and use, the
+ maximum rate seen by rrdtool; compute and show the average
+
+* Sliding window (trend) analysis
+ Compute a smoother average, for instance over the last 6 CDPs
+
+* percentile (95th or other)
+ Remove peaks, 95 percent of all rates are at or below the
+ returned value
+
+Logging
+-------
+* a second logging interface: rrdtool updatev
+ Verbose updating of the database; show CPDs being created
+
+* Aberrant Behavior Detection with Holt-Winters Forecasting
+ Compare current data with expected data, detect and log when
+ the rates are outside expected levels
+
+* COMPUTE datatype for artificial datasources calculating their
+ input using RPN math and data from the other datasources.
+
+Behind the Scenes
+-----------------
+* In order to support Holt-Winters and Calculated Datasources,
+ the rrdtool dataformat has changed. While the new version of rrdtool can
+ read files created with rrdtool 1.0.x. It is not possible to read files
+ created by rrdtool-1.2.x with rrdtool-1.0.x
+
+* External libraries are not included with rrdtool anymore. This is in line
+ with todays trend of using shared libraries everywhere. With the exception
+ of the cgi library most things required by rrdtool will be found on every recent
+ system.
+
+* Memory Mapped IO support for faster logging.
+
+---------------
-2004/01/20 Tobi Oetiker <tobi@oetiker.ch>
- Ripped out all foreign libraries and adapted
Configure and Makefiles and accordingly.
2002/03/26 Peter Speck <speck@ruc.dk>
* Updated zlib and libpng
* rrd_gfx.c intrduced as libart wrapper
* LINE takes now a float as argument
- * rrdtool uses truetype for fonts
+ * RRDtool uses truetype for fonts
* thanks to libart there is now full alpha transparenc
and antialiasing.
* the new option --font lets customize the font
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.
+ NOT be read by the old 1.0.x RRDtools.
Jake:
Aberrant Behavior Detection support. A brief overview added to