[Pytables-users] [ANN] PyTables 0.7.2 released

[Francesc A. <fa...@op...>]

Announcing PyTables 0.7.2
-------------------------

As promised, here you have the latest and coolest pytables encarnation!.

On this release you will not find any exciting new features. It is
mainly a maintenance release where the next issues has been addressed:
       - a memory leak was fixed
       - memory consumption is being addressed and lowered
       - much faster opening of files
       - Some important index patterns cases in table reads has been
         optimized

More in detail:

What's new
-----------

        - Fixed a nasty memory leak located on the C libraries (it was
          happening during HDF5 attribute writes). After that, the
          memory consumption when using large object trees has dropped
          quite a bit. However, there remains some small leaks that
          has been tracked down to the underlying numarray
          library. These leaks has been reported, and hopefully they
          should be fixed more sooner than later.

        - Table buffers are built dinamically now, so if Tables are
	  not accessed for reading or writing this memory will not be
	  booked. This will help to reduce the memory consumption.

	- The opening of files with lots of nodes has been accelerated
	  between a factor 2 or 3. For example, a file with 10 groups
	  and 3000 tables that takes 9.3 seconds to open in 0.7.1, now
	  takes only 2.8 seconds.

	- The Table.read() method has been refactored and optimized
	  and some parts of its code has been moved to Pyrex. In
	  particular, in the special case of step=1, up to a factor 5
	  of speedup (reaching 160 MB/s on a Pentium4 @ 2 GHz) when
	  reading table contents can be achieved now.

	- Done some cosmetic changes in the user manual, but, as no
          new features has been added, you won't need to read the
          manual again :-)

Enjoy!,

-- 
Francesc Alted