[Date Prev][Date Next] [Thread Prev][Thread Next] [Date Index] [Thread Index]

Re: Bug#655185: RFP: pxz -- parallel xz compressor


Chow Loong Jin wrote:
> > Parallel XZ is a compression utility that takes advantage of running
> > LZMA compression of different parts of an input file on multiple cores
> > and processors simultaneously. Its primary goal is to utilize all
> > resources to speed up compression time with minimal possible influence
> > on compression ratio.
> Ooh, parallel xz compression sounds really awesome. I wonder if the generated xz
> compressed files can be xdelta'd by pristine-tar, though.

Good question. Not sure if pristine-tar supports xz already at all.

WRT parallelization: For bzip2 pristine-tar makes a difference between
bzip2- and pbzip2-generated files. There also exists pigz which is a
parallel gzip implementation. But either pristine-tar does not support
it or its generated files are bitwise identical to those generated
with gzip.

		Regards, Axel
 ,''`.  |  Axel Beckert <abe@debian.org>, http://people.debian.org/~abe/
: :' :  |  Debian Developer, ftp.ch.debian.org Admin
`. `'   |  1024D: F067 EA27 26B9 C3FC 1486  202E C09E 1D89 9593 0EDE
  `-    |  4096R: 2517 B724 C5F6 CA99 5329  6E61 2FF9 CD59 6126 16B5

Reply to: