started change log

[rrdtool.git] / NEWS

diff --git a/NEWS b/NEWS
index 40c69d9..efab6eb 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -1,9 +1,61 @@
 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.
+
+---------------
+
+  Configure and Makefiles and accordingly.
+
+2002/03/26 Peter Speck <speck@ruc.dk>
+  Contribution of an svg output routine for the new gfx graphing part
 
 2002/03/23 Alex van den Bogaerdt <alex@ergens.op.Het.Net>
   Several visible changes made to rrd_graph
@@ -19,7 +71,7 @@ for details check the cvs ChangeLog
   * 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
@@ -55,7 +107,7 @@ for details check the cvs ChangeLog
 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