-RRDTOOL NEWS
-============
+#####################################
+Major Changes between 1.5.x and 1.6.x
+-------------------------------------
+API
+---
+* librrd_th is gone. librrd is now fully thread-safe
+
+RRD Graph
+---------
+* new CDEF function SMIN: a,b,c,3,SMIN -> min(a,b,c)
+* new CDEF function SMAX: a,b,c,3,SMAX -> max(a,b,c)
+* new CDEF function STDEV: a,b,c,3,STDEV -> stdev(a,b,c)
+* new CDEF function POW: a,b,POW -> a**b
+* new CDEF function PERCENT: a,b,c,95,3,PERCENT -> find 95percentile of a,b,c
+
+#####################################
+Major Changes between 1.4.x and 1.5.x
+-------------------------------------
+
+RRD Graph
+---------
+* Ability to use data from a callback function to supply data
+ for graphs. With perl bindings for writing the callbacks in perl.
+
+* Second color option for AREAs causing a gradient effect
+ by Rian Shelley
+
+* RRDcached awareness. Instead of just flushing the file, data can now
+ be pulled in from remote RRDcached instances.
+
+* VDEF results do now explicitly KNOW when they have no time associated
+ and can behave appropriately. -- Jean-Edouard Babin
+
+RRDcreate
+---------
+Ability to use exiting rrd files to pre-populate new ones. Allowing to
+preserve data even when fundamentally changing the structure of your rrd
+files.
+
+RRDcached
+----------
+* New FETCH command allowing rrd_fetch to operate through the daemon and
+ thus work remotely. By Florian Forster
+
+* New rrd_client commands INFO, FIRST, LAST, CREATE by Steve Shipway
+
+API
+---
+* exported rrd_update_v_r for theadsave rrd_update calls
+
+libDBI
+------
+* make rrdfillmissing actually work. The parameter is now in seconds and not
+ in steps for ease of use by Hans J�rgen Jakobsen
+
+Bindings
+--------
+* dotnet by Chris Larsen of Euphoria Audio
+
+
+#####################################
+Major Changes between 1.3.x and 1.4.x
+-------------------------------------
+
+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 file handling 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.
+
+See rrdcached documentation.
+
+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
+consumption while restoring xml files is only slightly larger than the
+resulting rrd file. Which is much less than the requirements of the 1.3 and
+even 1.2
+
+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. See rrdgraph_libdbi documentation.
+
+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
+
+* new graph option --grid-dash on:off to configure the dash length
+ in the grid painted over the graph 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 markers (enable with --dynamic-labels) depending on the
+ type of element in the graph by Lo�c Tortay
+
+for more detail see the CHANGES file.
#####################################
Major Changes between 1.2.x and 1.3.x
* --font-render-mode=mono for non anti aliased fonts
-* fonts come through fontconfig, use the Pango font nameing scheme
- -> 'Times 20' ... it is not possible to use truetype fonts
+* fonts come through fontconfig, use the Pango font naming scheme
+ -> 'Times 20' ... it is not possible to use true-type fonts
directly anymore.
* Tabs are position independent.
- anti-aliased output
- alpha transparency support
- truetype fonts
-
+
* additional graphics formats: EPS, PDF, SVG
* extended multi-part documentation
* 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
without functionality.
* In pipe mode, rrdtool answers with OK only if it was successful with the
- command. Otherwhise the answer will be ERROR...
+ command. Otherwise the answer will be ERROR...
Behind the Scenes
projects / thirdparty / rrdtool-1.x.git / blobdiff