I am pleased to announce the release of plzip 1.3.
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. 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:
cd3305f2da7ec6c248aece95458c72bd531edff2 plzip-1.3.tar.lz
e339c06093d8e7905390cc7c39f28f6198a66471 plzip-1.3.tar.gz
This release is also GPG signed. You can download the signature by
appending ".sig" to the URL.
Changes in version 1.3:
* Testing of a non-seekable file or of standard input now uses up to
30 MiB less memory per thread.
* "-dvvv" and "-tvvv" now show the dictionary size of the first
member, producing the same output as lzip for single-member files.
* Chapters "Memory requirements" and "Minimum file sizes" have been
added to the manual.
* The targets "install-compress", "install-strip-compress",
"install-info-compress" and "install-man-compress" have been added to
the Makefile.
Please send bug reports and suggestions to [email protected]
Regards,
Antonio Diaz, plzip co-author and maintainer.
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