X-Git-Url: https://git.octo.it/?p=rrdtool.git;a=blobdiff_plain;f=NEWS;h=9b0b4808a91d49df498124e52780f46df83e66ef;hp=40c69d9418f3e151184b2f58f002aa935564e2f7;hb=ca8d9c109d76e8c024f21edd10474e0e5d29b892;hpb=fc04186840774d769fbc2ffcc683cdc1019c089b diff --git a/NEWS b/NEWS index 40c69d9..9b0b480 100644 --- a/NEWS +++ b/NEWS @@ -1,66 +1,58 @@ 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. + - anti-aliased output + - alpha transparency support + - truetype fonts + +* additional graphics formats: EPS, PDF, SVG + +* extended multi-part documentation -2002/03/23 Alex van den Bogaerdt - Several visible changes made to rrd_graph - * Pie chart support workable - * Elements that are not used do not take up space on the img - * Hack for the missing rotated text (see --vertical-label) - * Tiny boxes in front of labels now scale with the text +* VDEF support; define and use variables. Find, and use, the + maximum rate seen by rrdtool; compute and show the average -2002/01/15 Tobias Oetiker - The BIG graph update - * Replace libgd with libart - * Added freetype - * Updated zlib and libpng - * rrd_gfx.c intrduced as libart wrapper - * LINE takes now a float as argument - * rrdtool uses truetype for fonts - * thanks to libart there is now full alpha transparenc - and antialiasing. - * the new option --font lets customize the font - and size for various graph elements - * Updated to -> libtool 1.4.2 automake 2.12 autoconf 2.52 - * new --zoom commandline option for zoom ans shrinking - ---- Still missing is rotatet text for the yaxis description - ---- Still missing is tab support in the text rendere - ---- Still missing is autoconf support for a default truetype font +* Sliding window (trend) analysis + Compute a smoother average, for instance over the last 6 CDPs -2001/07/26 Alex van den Bogaerdt - Added TOTAL to the VDEF functions. +* percentile (95th or other) + Remove peaks, 95 percent of all rates are at or below the + returned value -2001/07/19 Alex van den Bogaerdt - VDEF support. This is a variable containing one value - and a time component. This type of variable can hold - the result of a function over a complete time series - of data (DEF or CDEF) such as the maximum seen, and when. +Logging +------- +* a second logging interface: rrdtool updatev + Verbose updating of the database; show CPDs being created -2001/03/10 Jake Brutlag - Support for COMPUTE data sources (CDEF data sources). Removes the RPN - parser and calculator from rrd_graph and puts then in a new file, - rrd_rpncalc.c. Changes to core files rrd_create and rrd_update. Some - clean-up of aberrant behavior stuff, including a bug fix. - Documentation update (rrdcreate.pod, rrdupdate.pod). Change xml format. - -2001/03/07 Tobias Oetiker - Integrated complete rewrite - of rrdgraph documentation by Alex van den Bogaerdt - . This also contains info on his planned - changes to the rrdgraph module +* Aberrant Behavior Detection with Holt-Winters Forecasting + Compare current data with expected data, detect and log when + the rates are outside expected levels -2001/03/02 Tobias Oetiker - Added Aberrant Patch from Jake Brutlag - From now one, new rrd files use version tag 0002. They can - NOT be read by the old 1.0.x rrdtools. +* COMPUTE data type for artificial data-sources calculating their + input using RPN math and data from the other data-sources. - Jake: - 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 (i.e. new tool can read and will - leave the binary header unchanged for old files). - See http://cricket.sourceforge.net/aberrant/rrd_hw.htm +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. + +Behind the Scenes +----------------- +* In order to support Holt-Winters and Calculated Datasources, + 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 + +* 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.