fixed 2. x-grid example ... since the lable is valid for the whole day, it must be...

[rrdtool.git] / NEWS

diff --git a/NEWS b/NEWS
index 3553621..32ff16e 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -1,18 +1,71 @@
 RRDTOOL NEWS
 ============
 RRDTOOL NEWS
 ============

+Major Changes between 1.2.x and 1.3.x
+
+see http://oss.oetiker.ch/rrdtool-trac/wiki/RRDtool13
+for up to date information
+
+File access methods (Bernhard Fischer)
+-------------------
+* introduced file-accessor functions rrd_read/rrd_seek/rrd_write
+* implemented full mmap-based file access with madvise hints for improved
+  scalability, much reduced memory-footprint and much less blocking on
+  disk
+* implemented optional full file-descriptor access instead of FILE* access
+
+Graphing (Tobi Oetiker)
+--------
+* libart has been replaced by cairo/pango
+* pango markup is supported
+* full gridfitting 
+* --graph-render-mode=mono for non antialiased graphing
+* --font-render-mode=mono for non antialiased fonts
+* fonts come through fontconfig, use the Pango fontnameing
+  scheme -> 'Times 20' ... it is not possible to use
+  truetype fonts directly anymore.
+* Tabs are position independent.
+* TRENDNAN filter that ignores NAN values while caculating the TREND data. (Timo Stripf)
+* --full-size-mode to specify the outer border of the image and not just of the graphing canvas (Matthew Chambers)
+* TEXTALIGN command to alter default text alignment behaviour
+* C API supports in-memory graphing with rrd_graph_in_memory (Evan Miller)
+* draw dashed lines in graphs (Thomas Gutzler)
+ 
+Forecasting (Evan Miller)
+-----------
+* the new MHWPREDICT consolidation function uses a variation of the Holt-Winters
+  method. It is a drop-in replacement for HWPREDICT, and is better suited for
+  data whose seasonal variations grow or shrink in proportion to the average.
+
+Misc
+----
+* ruby rrd_fetch will return step as a last property -- Mike Perham
+
+Incompatibility
+---------------
+* If you create an RRD with the new MHWPREDICT function, the resulting rrdfile will
+  be version 0004 and can only be used in rrdtool 1.3.
+
+Locale Independent Input
+------------------------
+* Regardles of locale you are in, rrdtool always expects input to be numbers (LC_NUMERIC)
+  in C or POSIX locale for numbers. (not 1,1 but 1.1) this is necessary to make
+  things like RPN work as it uses , as a separator.
+
+RRDTOOL NEWS
+============

 Major Changes between 1.0.x and 1.2.x
 
 Graphing
 --------
 
 * rewritten graphics generation based on libart.
 Major Changes between 1.0.x and 1.2.x
 
 Graphing
 --------
 
 * rewritten graphics generation based on libart.

-  - antialiased output
+  - anti-aliased output

   - alpha transparency support
   - truetype fonts
  
 * additional graphics formats: EPS, PDF, SVG
 
   - alpha transparency support
   - truetype fonts
  
 * additional graphics formats: EPS, PDF, SVG
 

-* extended multipart documentation
+* extended multi-part documentation

 
 * VDEF support; define and use variables.  Find, and use, the
   maximum rate seen by rrdtool; compute and show the average
 
 * VDEF support; define and use variables.  Find, and use, the
   maximum rate seen by rrdtool; compute and show the average


@@ -33,17 +86,24 @@ Logging
   Compare current data with expected data, detect and log when
   the rates are outside expected levels
 
   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.
+* COMPUTE data type for artificial data-sources calculating their
+  input using RPN math and data from the other data-sources.

  
 Incompatibilities
 -----------------
 * Colons in COMMENT arguments to rrdtool graph must be escaped with a backslash
 
  
 Incompatibilities
 -----------------
 * Colons in COMMENT arguments to rrdtool graph must be escaped with a backslash
 

+* the --alt-y-mrtg option is gone or rather since 1.2.7 it is back but
+  without functionality.
+
+* In pipe mode, rrdtool answers with OK only if it was successful with the
+  command. Otherwhise the answer will be ERROR...
+
+

 Behind the Scenes
 -----------------
 * In order to support Holt-Winters and Calculated 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
+  the rrdtool data format 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
 
   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