X-Git-Url: https://git.octo.it/?p=rrdtool.git;a=blobdiff_plain;f=NEWS;h=8f2a87888f72312c1d29911e5b3ee929ae44ca8c;hp=19fed3eb0b13cf18f98d2d562639322f28ef842b;hb=65a92876144f3016e623f49a75b5468cd8375bd4;hpb=65c3cfc65d68cb8ad49dfa6af8052b953bfe81f6 diff --git a/NEWS b/NEWS index 19fed3e..8f2a878 100644 --- a/NEWS +++ b/NEWS @@ -1,34 +1,55 @@ 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 -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 - -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. +* 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 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 + +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.