I am pleased to announce the release of plzip 1.4.
Plzip is a massively parallel (multi-threaded) lossless data compressor
based on the lzlib compression library, with a user interface similar to
the one of lzip, bzip2 or gzip.
Plzip can compress/decompress large files on multiprocessor machines
much faster than lzip, at the cost of a slightly reduced compression
ratio (0.4 to 2 percent larger compressed files). Note that the number
of usable threads is limited by file size; on files larger than a few GB
plzip can use hundreds of processors, but on files of only a few MB
plzip is no faster than lzip.
Plzip uses the lzip file format; the files produced by plzip are fully
compatible with lzip-1.4 or newer, and can be rescued with lziprecover.
The lzip file format is designed for data sharing and long-term
archiving, taking into account both data integrity and decoder availability.
A nice feature of the lzip format is that a corrupt byte is easier to
repair the nearer it is from the beginning of the file. Therefore, with
the help of lziprecover, losing an entire archive just because of a
corrupt byte near the beginning is a thing of the past.
The homepage is at http://www.nongnu.org/lzip/plzip.html
The sources can be downloaded from
http://download.savannah.gnu.org/releases/lzip/plzip/
The sha1sums are:
d8d5fbd1741fa93366c44496a00340ecf5995822 plzip-1.4.tar.lz
6e6ee73501716654aaf33447a088565fa630da1d plzip-1.4.tar.gz
This release is also GPG signed. You can download the signature by
appending ".sig" to the URL.
Changes in version 1.4:
* The option "-0" has been modified to use the new fast encoder of
lzlib 1.7, which achieves a compression speed and ratio comparable to
those of pigz's default compression level.
Please send bug reports and suggestions to [email protected]
Regards,
Antonio Diaz, plzip co-author and maintainer.
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