X-Git-Url: https://git.octo.it/?p=rrdtool.git;a=blobdiff_plain;f=NEWS;h=c482d227ebb3128e4ac0a8d0bafcc9e1c92bef9b;hp=355362104d3589aab39a72a38e132c89ef03eb10;hb=161ecf9c20dbf285f7746aad42327edb8bfeeccc;hpb=990fcfb7eec407edfe504f42760bae204e1c074d

diff --git a/NEWS b/NEWS
index 3553621..c482d22 100644
--- a/NEWS
+++ b/NEWS
@@ -1,18 +1,90 @@
 RRDTOOL NEWS
 ============
+Major Changes between 1.2.x and 1.3.x
+
+RRdtool dump / restore Incompatibilities
+----------------------------------------
+rrdtool dump 1.3 does emit completely legal xml. Basically this means that
+it contains an xml header and a DOCTYPE definition. Unfortunately this
+causes older versions of rrdtool restore to be unhappy.
+
+To restore a new dump with ann old rrdtool restore version, either remove
+the xml header and the doctype by hand (both on the first line of the dump)
+or use rrdtool dump --no-header.
+
+NEW 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
+
+NEW 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+* libart has been replaced by cairo/pango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 in-memory graphing with rrd_graph_v (Evan Miller)
+* draw dashed lines in graphs (Thomas Gutzler)
+* new interface graphv which returns inforamation useing the rrd_info
+  interface (Tobi Oetiker and Mark Plaksin)
+
+NEW 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.
+
+Rewrites
+--------
+* rrd_restore now uses libxml for parsing which makes things much more
+  tolerant towards xml variations. The old code could mostly just parse the
+  xml as it was output by rrdtool dump. See also: 'incompatibilities' at the
+  top of this document. (by Florian octo Forster)
+
+* rrd_update rewritten to make it more modular. Fixed two longstanding
+  HW bugs in the process (Evan Miller)
+
+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.
-  - antialiased output
+  - anti-aliased output
   - 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
@@ -33,17 +105,24 @@ Logging
   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
 
+* 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,
-  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