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2 non-PAUSE user(s).

gray

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>