/ 
Compress-LZ4-0.13
River stage one • 1 direct dependent • 2 total dependents
/ Compress::LZ4

NAME

Compress::LZ4 - Perl interface to the LZ4 (de)compressor

SYNOPSIS

use Compress::LZ4;

my $dest = compress($source);
my $dest = decompress($source);

DESCRIPTION

The Compress::LZ4 module provides an interface to the LZ4 (de)compressor.

FUNCTIONS

compress

$string = compress($buffer)

Compresses the given buffer and returns the resulting string. The input buffer can be either a scalar or a scalar reference.

decompress

uncompress

$string = decompress($buffer)

Decompresses the given buffer and returns the resulting string. The input buffer can be either a scalar or a scalar reference.

On error (in case of corrupted data) undef is returned.

PERFORMANCE

This distribution contains a benchmarking script which compares serveral compression modules available on CPAN. These are the results on a MacBook 2GHz Core 2 Duo (64-bit) with Perl 5.14.2:

Compressible data (10 KiB) - compression
----------------------------------------
Compress::LZ4::compress     183794/s  1795 MiB/s  1.152%
Compress::Snappy::compress  122496/s  1196 MiB/s  5.332%
Compress::LZF::compress      44383/s   433 MiB/s  1.865%
Compress::Zlib::compress      2765/s    27 MiB/s  1.201%
Compress::Bzip2::compress      110/s     1 MiB/s  2.070%

Compressible data (10 KiB) - decompression
------------------------------------------
Compress::LZ4::decompress     546133/s  5333 MiB/s
Compress::Snappy::decompress  175363/s  1713 MiB/s
Compress::LZF::decompress     135244/s  1321 MiB/s
Compress::Bzip2::decompress     6352/s    62 MiB/s
Compress::Zlib::uncompress      5440/s    53 MiB/s

Uncompressible data (10 KiB) - compression
------------------------------------------
Compress::LZ4::compress     763738/s  7458 MiB/s  107.463%
Compress::Snappy::compress  552269/s  5393 MiB/s  100.000%
Compress::LZF::compress     532919/s  5204 MiB/s  101.493%
Compress::Bzip2::compress    15424/s   151 MiB/s  185.075%
Compress::Zlib::compress      4325/s    42 MiB/s  105.970%

Uncompressible data (10 KiB) - decompression
--------------------------------------------
Compress::LZF::decompress     2583577/s  25230 MiB/s
Compress::LZ4::decompress     2383127/s  23273 MiB/s
Compress::Snappy::decompress  2068002/s  20195 MiB/s
Compress::Bzip2::decompress     48650/s    475 MiB/s
Compress::Zlib::uncompress       6342/s     62 MiB/s

SEE ALSO

http://code.google.com/p/lz4/

REQUESTS AND BUGS

Please report any bugs or feature requests to http://rt.cpan.org/Public/Bug/Report.html?Queue=Compress-LZ4. I will be notified, and then you'll automatically be notified of progress on your bug as I make changes.

SUPPORT

You can find documentation for this module with the perldoc command.

perldoc Compress::LZ4

You can also look for information at:

COPYRIGHT AND LICENSE

Copyright (C) 2012 gray <gray at cpan.org>, all rights reserved.

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

AUTHOR

gray, <gray at cpan.org>