Bug#507492: ITP: lbzip2 -- parallel bzip2 filter

[ERSEK Laszlo <lacos@elte.hu>]

Package: wnpp
Severity: wishlist
Owner: Laszlo Ersek <lacos@elte.hu>


* Package name    : lbzip2
  Version         : N/A; reported 2008-12-01
  Upstream Author : Laszlo Ersek <lacos@elte.hu>
* URL             : http://phptest11.atw.hu/
* License         : GPLv2+
  Programming Lang: C
  Description     : parallel bzip2 filter

Lbzip2 is a Pthreads-based parallel bzip2/bunzip2 filter, passable to GNU 
tar with the --use-compress-program option. It isn't restricted to regular 
files on input, nor output. Lbzip2 utilizes multiple threads and an 
input-bound splitter even when decompressing bz2 files created by standard 
bzip2. Successful splitting for decompression isn't guaranteed, just very 
likely (failure is detected). Splitting in both modes and compression 
itself occur with an approximate 900k block size.

On an Athlon-64 X2 6000+, lbzip2 was 92% faster than standard bzip2 when 
compressing, and 45% faster when decompressing (based on wall clock time).

On a 2x Quad-Core Opteron 2352, lbzip2 was 588% faster than standard bzip2 
when compressing, and 394% faster when decompressing (based on wall clock 
time).