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Project Description

LRZIP is a compression program that can achieve very high compression ratios and speed when used with large files using unlimited sized compression windows. It uses the combined compression algorithms of zpaq and lzma for maximum compression, lzo for maximum speed, and the long range redundancy reduction of rzip. It is designed to scale with increases with RAM size, improving compression further. A choice of either size or speed optimizations allows for either better compression than even lzma can provide, or better speed than gzip, but with bzip2 sized compression levels. It also has high grade password protected encryption and full STDIN/STDOUT support.

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System requirement is not defined
Information regarding Project Releases and Project Resources. Note that the information here is a quote from Freecode.com page, and the downloads themselves may not be hosted on OSDN.

2008-03-21 10:33
0.23

The LZMA SDK was updated to the latest version,
4.57. Multithreading support for LZMA was added,
which nearly doubles speed. A gzip compression
option was added. An assembler module for CRC
computation was added, but this is dependent on
the processor. More enhancements were made to the
lzo_compresses function to avoid LZMA errors. File
cleanup was done. configure.in was changed to
improve compiling. Code cleanup was done.
Documentation with benchmarks was improved and
expanded. Major bugs were fixed to work on big RAM
machines. A major fix was made to prevent copying
all data above 4GB uncompressed.
Tags: Major feature enhancements

2007-12-10 02:01
0.19

Numerous updates. lzma hanging on incompressible data has been fixed with improved lzo testing. An output directory option, a greater verbosity option, a decompression progress indicator, and nice support have been added. There are numerous minor fixes.
Tags: Major bugfixes

2006-11-06 03:04
0.18

Blocks to be compressed by lzma are now scanned by lzo in advance to find incompressible data and bypass attempting to compress them. This speeds up substantially attempting to compress incompressible files, and should fix the "lzma getting stuck on an incompressible block" bug. Basic Darwin support was added. Compression mode was stratified for lower levels of lzma compression.
Tags: Minor feature enhancements

2006-11-03 11:01
0.17

The default lzma compression window was increased
to improve default compression of very large
files. An option for maximum window and
compression settings were added. An option for
static build was added. The lzma source tree was
trimmed, making the lrzip tarball much smaller. A
much more informative README was written.
Tags: Minor feature enhancements

2006-11-01 14:47
0.16

This is the first public release. The file format
and application are stable, and work on 32-bit and
64-bit Linux.
Tags: Initial freshmeat announcement

Project Resources

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