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[Lzip-bug] Plzip 1.7-rc2 released


From: Antonio Diaz Diaz
Subject: [Lzip-bug] Plzip 1.7-rc2 released
Date: Fri, 29 Dec 2017 17:09:17 +0100
User-agent: Mozilla/5.0 (X11; U; Linux i586; en-US; rv:1.9.1.19) Gecko/20110420 SeaMonkey/2.0.14

Plzip 1.7-rc2 is ready for testing here
http://download.savannah.gnu.org/releases/lzip/plzip/plzip-1.7-rc2.tar.lz
http://download.savannah.gnu.org/releases/lzip/plzip/plzip-1.7-rc2.tar.gz

The sha256sums are:
c6b91e975f85783cd58aaad540eafc91902a639ba70c69b187376106bd66232f plzip-1.7-rc2.tar.lz 96cc8366f265b58cfe47d4270d5c7b7c25425603757c4f42c3a9b45bf7bc67ff plzip-1.7-rc2.tar.gz

Please, test it and report any bugs you find.

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.

The homepage is at http://www.nongnu.org/lzip/plzip.html

Changes in this version:

* Some changes have been made to reduce memory fragmentation and total memory use.

* When compressing on a 32 bit system, plzip now tries to limit the memory use to under 2.22 GiB (4 worker threads at level -9) by reducing the number of threads below the system's default. (This is an improvement on the limit implemented in -rc1).

  * A block diagram of plzip has been added to the manual.


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

--
If you are distributing software in xz format, please consider using lzip instead. See http://www.nongnu.org/lzip/lzip_benchmark.html#xz1 and http://www.nongnu.org/lzip/xz_inadequate.html




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