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Thread: LZSR fast compressor !

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    Nania Francesco's Avatar
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    Wink LZSR fast compressor !

    Released new very fast Compressor !
    name is LZSR v.0.01.
    require 6 MB of memory!

    Download from:
    http://heartofcomp.altervista.org/index.htm

  2. #2
    Member m^2's Avatar
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    We have different definitions of "very fast". I thought it wouldn't be much slower than slug.
    A very rough test, expect timing to be up to 10% off:
    nbbs.tar (source code):
    No code has to be inserted here.TCUP.tar (mostly binary):
    No code has to be inserted here.
    ADDED: Pentium D 805, Win XP x64
    Last edited by m^2; 2nd October 2011 at 00:20.

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    Nania Francesco's Avatar
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    Hi m^2 (Cersorship)!
    Lzsr is new method of compression... not archiver !
    Thanks for your participation but creed are not much correcting!
    Freearc is a great program of data compression, created with search years!
    Slug is an other program from the remarkable potentialities!
    Lzsr is born today. He is not truly fast or it is! this it you in absolute way cannot judge!
    If for you he is not fast with two single carried out tests. a your Benchmark from 10 GB creates well and then you judge if it is fast or slow!

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    Programmer Bulat Ziganshin's Avatar
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    m^2, it would be better to compare with tornado and so on, i.e. pure single-threaded codecs

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    Member m^2's Avatar
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    Quote Originally Posted by Bulat Ziganshin View Post
    m^2, it would be better to compare with tornado and so on, i.e. pure single-threaded codecs
    I reported Process CPU time, not wall time, so FreeArc was slightly disadvantaged here.
    Quote Originally Posted by Nania Francesco View Post
    Hi m^2 (Cersorship)!
    Lzsr is new method of compression... not archiver !
    I intentionally fed FreeArc with a .tar, so it didn't use tricks like sorting or using different algorithms for different data.
    Quote Originally Posted by Nania Francesco View Post
    Thanks for your participation but creed are not much correcting!
    Freearc is a great program of data compression, created with search years!
    Slug is an other program from the remarkable potentialities!
    Lzsr is born today. He is not truly fast or it is! this it you in absolute way cannot judge!
    I didn't say anything bad about LZSR, just compared numbers. I know it's very new and there will be optimizations, but anyway I see nothing wrong with comparing it with competition.

    Quote Originally Posted by Nania Francesco View Post
    If for you he is not fast with two single carried out tests. a your Benchmark from 10 GB creates well and then you judge if it is fast or slow!
    I didn't say it's slow, IMO it's about average, but it's not something negative, it's just your classification put it in a wrong bucket in my head. That bucket is important too.

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    Member RichSelian's Avatar
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    [admin@LenovoPC comprox]$ time wine ./Lzsr.exe c ./testcase/calgary.dat 1
    ./testcase/calgary.dat (3152896 bytes) -> 1 (906750 bytes) in 1.20 s.

    [admin@LenovoPC comprox]$ time wine ./Lzsr.exe c ./testcase/enwik8.dat 1
    ./testcase/enwik8.dat (100000000 bytes) -> 1 (29433834 bytes) in 36.71 s.

    Very fast and the compression ratio is good!

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    Input 807,821,312 bytes html/text

    zhuff -t1 - 174,841,471 bytes 3.875 sec
    slug - 89,057,370 bytes 4.109 sec
    tor-small -4 - 87,625,678 bytes 6.000 sec
    lzsr c - 74,175,100 bytes 75:157 sec
    arc -m2 -mt1 - 72,860,807 bytes 18.344 sec
    tor-small -5 - 66,107,613 bytes 9.250 sec
    tor-small -6 - 55,266,959 bytes 10.609 sec
    bsc -m0 -f -T - 48,639,100 bytes 52.906 sec
    bsc -m0 -T - 48,233,715 bytes 58.344 sec
    tor-small -7 - 44,651,739 bytes 19.219 sec
    arc -m3 -mt1 - 41,086,801 bytes 37.094 sec
    arc -m4 -mt1 - 37,111,977 bytes 60.000 sec
    arc -m5 -mt1 - 36,247,187 bytes 65.265 sec
    cmm4 77 - 22,305,045 bytes 669.047 sec

    zhuff -t4 - 174,841,471 bytes 1.297 sec
    arc -m2 -mt4 - 72,860,807 bytes 6.641 sec
    arc -m3 -mt4 - 71,299,341 bytes 10.875 sec
    arc -m4 -mt4 - 66,854,038 bytes 13.391 sec
    bsc -m0 -f - 48,639,100 bytes 16.516 sec
    bsc -m0 - 48,233,715 bytes 17.860 sec
    arc -m5 -mt4 - 36,867,465 bytes 41.688 sec
    Last edited by Sportman; 3rd October 2011 at 01:09.

  8. #8
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    Cool LZSR fast or not?

    LZSR fast or not?

    The question of Life ?
    LZSR is:
    1) Single thread compressor;
    2) based on method of compression fusion of (LZP-LZ77) and (SR) -> LZSR;
    3) comparable with SR2,SR3,SR3C,BZP,WINTURTLE,PPMS,TarsalLZP,LZPXj etc ... (the code are similar but more fast, for me naturally!)

    OK! or not ?

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