On Wed, Sep 10, 2008 at 10:15 AM, Antonio Diaz Diaz <[EMAIL PROTECTED]> wrote: > Eric Blake wrote: >> >> It seems a bit ironic to add LZMA support but not offer tar-1.20.tar.lzma >> on the ftp site :) > > Just in case you are thinking about releasing a LZMA compressed tar package, > perhaps you would like to know there exists a much simplified LZMA > compressor/decompressor program and format (only eight source files > including two from the command line argument parser) featuring magic bytes, > streaming, integrity checking, 64-bit file size support and an user > interface almost identical to the one of bzip2. > > Its name is lzip, and you can download it from here > http://freshmeat.net/projects/lzip/ > > For the record, LZIP has a different binary header. Instead of LZMA's "\xFFLZMA", it seems to only have: "LZIP" I imagine that would be another patch.
Here are it's times relative to bzip2, gzip, and lzop (lzip has a scary 9minute compression time): # ls -lh linux-2.6.26.3-olpc.tar -rw-r----- 1 turtle turtle 514M Sep 10 02:38 linux-2.6.26.3-olpc.tar # time lzop linux-2.6.26.3-olpc.tar real 0m6.028s user 0m5.163s sys 0m0.487s # time ~/lzip-0.2/lzip linux-2.6.26.3-olpc.tar real 9m51.312s user 9m49.965s sys 0m0.950s # time gzip linux-2.6.26.3-olpc.tar real 0m33.023s user 0m32.461s sys 0m0.497s # time bzip2 linux-2.6.26.3-olpc.tar real 2m2.926s user 2m2.005s sys 0m0.800s # ls -lh -rw-r----- 1 turtle turtle 75M Sep 10 02:38 linux-2.6.26.3-olpc.tar.lz -rw-r----- 1 turtle turtle 198M Sep 10 02:38 linux-2.6.26.3-olpc.tar.lzo -rw-r----- 1 turtle turtle 142M Sep 10 02:38 linux-2.6.26.3-olpc.tar.gz -rw-r----- 1 turtle turtle 111M Sep 10 02:38 linux-2.6.26.3-olpc.tar.bz2 # time lzop -d linux-2.6.26.3-olpc.tar.lzo real 0m13.576s user 0m2.087s sys 0m1.103s # time ~/lzip-0.2/lzip -d linux-2.6.26.3-olpc.tar.lz real 0m16.444s user 0m13.639s sys 0m1.087s # time gzip -d linux-2.6.26.3-olpc.tar.gz real 0m14.715s user 0m5.220s sys 0m1.070s # time bzip2 -d linux-2.6.26.3-olpc.tar.bz2 real 0m28.186s user 0m26.595s sys 0m1.353s -- Kevin Day
