X-Git-Url: https://git.octo.it/?p=rrdtool.git;a=blobdiff_plain;f=NEWS;h=99d2c6ba618a7e952d60959dd38b69cb62702805;hp=dc5d53259bdb41e87603c53cc909259892b0cccd;hb=a0b08d2acd3557d557e68de2e7fe9d31526f699f;hpb=81d27df498da26230934a68f175be8356b412fe5 diff --git a/NEWS b/NEWS index dc5d532..99d2c6b 100644 --- a/NEWS +++ b/NEWS @@ -1,18 +1,56 @@ 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optional full file-descriptor access instead of FILE* access + +Graphing (Tobi Oetiker) +-------- +* libart has been replaced by cairo/pango +* pango markup is supported +* full gridfitting +* --graph-render-mode=mono for non antialiased graphing +* --font-render-mode=mono for non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) + +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. + + +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 +71,24 @@ 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 @@ -53,70 +98,3 @@ Behind the Scenes system. * Memory Mapped IO support for faster logging. - ---------------- - - Configure and Makefiles and accordingly. - -2002/03/26 Peter Speck - Contribution of an svg output routine for the new gfx graphing part - -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 - -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 - -2001/07/26 Alex van den Bogaerdt - Added TOTAL to the VDEF functions. - -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. - -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. - - 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