X-Git-Url: https://git.octo.it/?p=rrdtool.git;a=blobdiff_plain;f=NEWS;h=ba0d8ad92f80748318b839b08190a286fdcc454c;hp=7adfad05e002551d2586d4a971a9ea5968662beb;hb=2fe1a1c93f2240b9c9ac2137f1b17b2e20213486;hpb=b7c278771851b0dfad0daf1c817fbc93316ef96e diff --git a/NEWS b/NEWS index 7adfad0..ba0d8ad 100644 --- a/NEWS +++ b/NEWS @@ -1,25 +1,67 @@ -RRDTOOL NEWS -============ +News for RRDtool 1.4 +==================== +$Id$ -x +RRD Caching Daemon (rrdcached) +------------------------------ +by Florian Forster and Kevin Brintnall -In this file I am noting the Major changes to rrdtool -for details check the cvs ChangeLog +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. -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 +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. -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 - Jack: - 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! See - http://cricket.sourceforge.net/aberrant/rrd_hw.htm +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 + +for more detail see the CHANGES file.