3 Major Changes between 1.2.x and 1.3.x
5 see http://oss.oetiker.ch/rrdtool-trac/wiki/RRDtool13
6 for up to date information
10 * introduced file-accessor functions rrd_read/rrd_seek/rrd_write
11 * implemented full mmap-based file access with madvise hints for improved
12 scalability, much reduced memory-footprint and much less blocking on
14 * implemented optional full file-descriptor access instead of FILE* access
18 * libart has been replaced by cairo/pango
19 * pango markup is supported
21 * --graph-render-mode=mono for non antialiased graphing
22 * --font-render-mode=mono for non antialiased fonts
23 * fonts come through fontconfig, use the Pango fontnameing
24 scheme -> 'Times 20' ... it is not possible to use
25 truetype fonts directly anymore.
26 * Tabs are position independent.
30 Major Changes between 1.0.x and 1.2.x
35 * rewritten graphics generation based on libart.
37 - alpha transparency support
40 * additional graphics formats: EPS, PDF, SVG
42 * extended multi-part documentation
44 * VDEF support; define and use variables. Find, and use, the
45 maximum rate seen by rrdtool; compute and show the average
47 * Sliding window (trend) analysis
48 Compute a smoother average, for instance over the last 6 CDPs
50 * percentile (95th or other)
51 Remove peaks, 95 percent of all rates are at or below the
56 * a second logging interface: rrdtool updatev
57 Verbose updating of the database; show CPDs being created
59 * Aberrant Behavior Detection with Holt-Winters Forecasting
60 Compare current data with expected data, detect and log when
61 the rates are outside expected levels
63 * COMPUTE data type for artificial data-sources calculating their
64 input using RPN math and data from the other data-sources.
68 * Colons in COMMENT arguments to rrdtool graph must be escaped with a backslash
70 * the --alt-y-mrtg option is gone or rather since 1.2.7 it is back but
71 without functionality.
73 * In pipe mode, rrdtool answers with OK only if it was successful with the
74 command. Otherwhise the answer will be ERROR...
79 * In order to support Holt-Winters and Calculated Datasources,
80 the rrdtool data format has changed. While the new version of rrdtool can
81 read files created with rrdtool 1.0.x. It is not possible to read files
82 created by rrdtool-1.2.x with rrdtool-1.0.x
84 * External libraries are not included with rrdtool anymore. This is in line
85 with todays trend of using shared libraries everywhere. With the exception
86 of the cgi library most things required by rrdtool will be found on every recent
89 * Memory Mapped IO support for faster logging.