X-Git-Url: https://git.octo.it/?p=rrdtool.git;a=blobdiff_plain;f=NEWS;h=d13a76ad04204ac3606a5e42e9bcc76c3328d3c4;hp=efab6eb8ad30eaa34ed4be16f677484b830e7b0c;hb=efd1e552c995d417113ab843edbc9f2974eeb20d;hpb=91725acad298d2f93a9060d9ceceeccbbe595782 diff --git a/NEWS b/NEWS index efab6eb..d13a76a 100644 --- a/NEWS +++ b/NEWS @@ -1,118 +1,73 @@ -RRDTOOL NEWS -============ -Major Changes between 1.0.x and 1.2.x - -Graphing --------- - -* rewritten graphics generation based on libart. - - antialiased output - - alpha transparency support - - truetype fonts - -* additional graphics formats: EPS, PDF, SVG - -* extended multipart documentation - -* 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 datatype for artificial datasources calculating their - input using RPN math and data from the other 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 - 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. - ---------------- - - 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 +News for RRDtool 1.4 +==================== +$Id$ + +RRD Caching Daemon (rrdcached) +------------------------------ +by Florian Forster and Kevin Brintnall + +The RRD Caching Daemon can dramatically improve the 'update' performance +of your system. Due to filehandling overheads, the time it takes todo one +update is virtually the same as to doing two updates in a row. + +The Cache Daemon intercepts rrdtool update calls, assembling multiple +updates before writing them to the actual rrd file. When calling rrdtool +graph in such a setup, the command will tell the daemon to flush out all +pending updates for the rrd files, required to draw the graph. + + +RRD Dumping and Restoring (rrdtool dump/restore) +------------------------------------------------ +by Tobi Oetiker + +The output of rrdtool dump has been adjusted to be simpler to parse by +existing xml parsers. + +The restore core has been completely re-written yet again and is now relying +on an incremental xml parser. This has the advantage that the memory +consumtion while restoring xml files is only slighly larger than the +resulting rrd file. Which is much less than the requirements of the 1.3. + +RRD Graphing functions (rrdtool graph) +-------------------------------------- +by Martin Sperl + +* VDEF PERCENTNAN (a PRECENT that ignores NAN) + +* CDEF PREDICT and PREDICTSIGMA functions for on-the-fly + data prediction without the need to modify existing rrd files as it is + required for HoltWinters. + +* LibDBI integration provides a path to read data directly of a supported + SQL database into rrdtool graph. + +Miscellaneous Changes +--------------------- + +* graph legends can now be placed left, right or above the graph with the + new --legend-direction and --legend-positon placement options. + by Melchior Rabe + +* switched to using automake 1.11 which provides a 'silent' build process, + causing errors and warnings to stand out much more than before. + by Tobi Oetiker + +* switched from intltoolize to autopoint for the i18n configuration. + by Tobi Oetiker + +* lua bindings for rrdtool + by Fidelis Assis + +* various improvements to rrd_open functions and mmap handling + by Daniel Pocock + +* allow the HW smoothing window size to be set to 0 with rrdtool tune + by sylvain luiset + +* new graph option --border to set the 3d border width + by Bernhard Reutner-Fischer + +* draw different color swats depending on the type of line drawn in the + graph by Loïc Tortay + +for more detail see the CHANGES file.