[rrd-developers] RRDtool 1.4 - higher Performance and cool Features

[Tobias Oetiker]

Just in time for LISA'09 I am releasing the all new RRDtool 1.4.
RRDtool 1.4 comes with a much anticipated RRDcache Daemon, elevating the
system to new performance levels it also contains a host of new and
improved features. See the List below. Get your copy from:

  http://oss.oetiker.ch/rrdtool/

cheers tobi

Brought to you by the 2009 RRDtool sponsors:
-----------------------------------------------------------------------
GOLD:   http://www.zenoss.com
        http://www.groundworkopensource.com

SILVER: http://www.digicomp.ch  http://www.atc-onlane.com
        http://www.terreactive.ch http://hosteurope.de
        http://www.hitmeister.de http://www.contego.com
        http://www.sidarion.ch http://chinavasion.com
-----------------------------------------------------------------------
ps. if you would like to become a sponsor for 2010, be in touch!

#####################################
Major Changes between 1.3.x and 1.4.x
-------------------------------------
$Id: NEWS 1958 2009-10-27 21:40:09Z oetiker $

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 swats depending on the type of line drawn in the
  graph by Loïc Tortay

for more detail see the CHANGES file.

-- 
Tobi Oetiker, OETIKER+PARTNER AG, Aarweg 15 CH-4600 Olten, Switzerland
http://it.oetiker.ch tobi at oetiker.ch ++41 62 775 9902 / sb: -9900