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[Lzip-bug] Plzip 1.8 released
Antonio Diaz Diaz
[Lzip-bug] Plzip 1.8 released
Mon, 07 Jan 2019 13:26:05 +0100
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I am pleased to announce the release of plzip 1.8.
Plzip is a massively parallel (multi-threaded) implementation of lzip,
fully compatible with lzip 1.4 or newer. Plzip uses the lzlib
Lzip is a lossless data compressor with a user interface similar to the
one of gzip or bzip2. Lzip can compress about as fast as gzip (lzip -0)
or compress most files more than bzip2 (lzip -9). Decompression speed is
intermediate between gzip and bzip2. Lzip is better than gzip and bzip2
from a data recovery perspective. Lzip has been designed, written and
tested with great care to replace gzip and bzip2 as the standard
general-purpose compressed format for unix-like systems.
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.
The homepage is at http://www.nongnu.org/lzip/plzip.html
The sources can be downloaded from
The sha256sums are:
This release is also GPG signed. You can download the signature by
appending '.sig' to the URL. If the 'gpg --verify' command fails because
you don't have the required public key, then run this command to import it:
gpg --keyserver keys.gnupg.net --recv-keys 8FE99503132D7742
Key fingerprint = 1D41 C14B 272A 2219 A739 FA4F 8FE9 9503 132D 7742
Changes in version 1.8:
* The new options '--in-slots' and '--out-slots', setting the number
of input and output packets buffered during streamed decompression, have
been added. Increasing the number of packets may increase decompression
speed, but requires more memory.
* The default number of input packets buffered per worker thread when
decompressing from non-seekable input has been increased from 2 to 4.
* The default number of output packets buffered per worker thread
when decompressing to non-seekable output has been increased from 32 to 64.
* Detection of forbidden combinations of characters in trailing data
has been improved.
* Errors are now also checked when closing the input file.
* The descriptions of '-0..-9', '-m' and '-s' in the manual have been
* The configure script now accepts the option '--with-mingw' to
enable the compilation of plzip under MS Windows (with the MinGW
compiler). Use with care. The Windows I/O functions used are not
guaranteed to be thread safe. (Code based on a patch by Hannes Domani).
* The configure script now accepts appending options to CXXFLAGS
using the syntax 'CXXFLAGS+=OPTIONS'.
* It has been documented in INSTALL the use of
CXXFLAGS+='-D __USE_MINGW_ANSI_STDIO' when compiling on MinGW.
Please send bug reports and suggestions to address@hidden
Antonio Diaz, plzip co-author and maintainer.
If you care about long-term archiving, please help me replace xz with
lzip. See http://www.nongnu.org/lzip/lzip_benchmark.html#xz1
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