X-Git-Url: https://git.octo.it/?p=rrdtool.git;a=blobdiff_plain;f=NEWS;h=b7c5e47245eba4973a7aae70b26b79133b77563c;hp=355362104d3589aab39a72a38e132c89ef03eb10;hb=a9f9c7a945caf1df7b8291755a5586313c018e41;hpb=990fcfb7eec407edfe504f42760bae204e1c074d diff --git a/NEWS b/NEWS index 3553621..b7c5e47 100644 --- a/NEWS +++ b/NEWS @@ -1,18 +1,108 @@ RRDTOOL NEWS ============ -Major Changes between 1.0.x and 1.2.x +##################################### +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optional full file-descriptor access instead of FILE* access + +NEW Graphing (Tobi Oetiker) +-------- +* libart has been replaced by cairo/pango +* pango markup is supported +* full gridfitting +* --graph-render-mode=mono for non antialiased graphing +* --font-render-mode=mono for non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 using the rrd_info + interface (Tobi Oetiker and Mark Plaksin) +* improved horizontal grid. Have a bit more grid lines and y-axis labels + while keeping them fahr enough apart to not run into each other. + +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. + +* 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. + +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) + +Internationalization (Takao Fujiwara and Tobi Oetiker) +-------------------- +* The help output by rrdtool has been internationalized. There are no real + translations included with rrdtool yet, contributions are welcome. +* The internationalization will only be compiled if libintl and friends are + available on your system. Use the configure option --disable-libintl if + you want to disable this feature + +Language Bindings +----------------- +* ruby rrd_fetch will return step as a last property -- Mike Perham + +* python rrdtool.info does now conform with the data structure returned + by the other language bindings. This is incompatible with the + previous (broken) version --tobi + +* python bindings got updatev support --tobi + +* ruby, perl, python bindings support the new graphv interface --tobi + +Locale Independent Numeric 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. + +###################################################################################### +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 +123,24 @@ 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