lzip-bug
[Top][All Lists]
Advanced

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

[Lzip-bug] Plzip 1.4 released


From: Antonio Diaz Diaz
Subject: [Lzip-bug] Plzip 1.4 released
Date: Wed, 22 Jul 2015 17:39:25 +0200
User-agent: Mozilla/5.0 (X11; U; Linux i586; en-US; rv:1.8.1.4) Gecko/20070601 SeaMonkey/1.1.2

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 address@hidden


Regards,
Antonio Diaz, plzip co-author and maintainer.




reply via email to

[Prev in Thread] Current Thread [Next in Thread]