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Thread: QuickLZ v1.30 (final) released!

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    Quote Originally Posted by Lasse Reinhold
    Version 1.30 final has been released
    Features: Now supporting four compression levels. Level 0 is using a new algorithm which is compressing both faster and better than version 1.20, but on the cost of decompression speed.
    API: Large changes - see the manual.
    Backwards compatibility: 1.30 can decompress 1.20 data and 1.20 can decompress level 1, 2 and 3 of version 1.30.
    Bugs fixed since previous version: None.
    http://www.quicklz.com/

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    QuickLZ tested here. http://cs.fit.edu/~mmahoney/compression/text.html# 4106

    Compression with -3 is a bit worse than quick3 1.30 beta. Also, curious that -0 compresses better but slower than -1.

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    Hi Matt,

    Thanks for testing

    It's level 0 which is using the new algorithm (wrote a little about it at the bottom of http://www.c10n.info/archives/461) and level 1, 2 and 3 which are compatible with 1.20. Please fix it on your website

    Level 0 is almost always faster than 1 with the -mem flag, so it must be disk I/O disturbance.

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    Level 0 compresses faster on my Sempron 2400+ machine...

    ENWIK8 (Level 0)
    Compression Time: 2.485 Seconds
    Compressed Size: 52,803,919 bytes

    ENWIK8 (Level 1)
    Compression Time: 3.282 Seconds
    Compressed Size: 57,153,015 bytes

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