[rrd-users] rrdtool 1.3.7 released - segfault fixed, hw performance enhanced

Tobias Oetiker tobi at oetiker.ch
Tue Apr 7 09:46:40 CEST 2009

RRDtool 1.3.7 released

The new release contains some rather influential changes.

* Holt-Winters rrds should see a drastic speedup.
* Front-ends relying on output from graph --lazy will work again
* updatev does not segfault on 32 bit platforms anymore.
* rrd_dump produces correct output with german locales.

As usual, you can get the update from


Detailed changes for 1.3.7


- fixed sprintf segmentation fault in updatev function for all
  architectures where sizeof(time_t) == 32

- removed all instances of rrd_flush from the holt winters code
  resulting in a massive performance gain for holt winters updates.
  rrd_flush was a left-over from the time when rrdtool IO was
  stream based. Even worse, the old fflush had been converted to
  fsync which was plain wrong.

- fixed rrd_xport output which included some stray debug output.

- fixed rrd_strerror handling to correctly work both for linux and
  posix compliant implementations.

- misc documentation fixes

- added missing utime.h include for architectures where it does not
  get loaded by some other dependency

- compilation fixes for rrd_dump on windows

- make rrd_dump work correctly even when using a locale where the
  decimal separator is no '.'

- restore classic behaviour of --lazy, doing all the calc work and
  outputting PRINT statements even when it does not draw the graph.
  This fixes some mrtg front-ends which have relied on this
  behaviour for a long time.

Enhanced Features

- graphv will now return graph_start and graph_end variables
  containing the timestamps for the start and the end of the graph.

Brought to you by the 2009 RRDtool sponsors:
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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

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