[Gelistirici] [ck] lrzip announce

[S.Çağlar Onur]

Hi Con;

29 Eki 2006 Paz 17:29 tarihinde, Con Kolivas şunları yazmıştı: 
> I've been playing with a side project blending compression algorithms for
> large file compression into a new file format based on the rzip, lzma and
> lzo code. Check out the readme and download the current release here:

Pardus uses a similiar approach for its own package format. Packges's install 
root merged into a single tarball called install.tar and that tarball 
compressed with lzma and this lzma and other distro specific files merged 
into zip contained so this structre called PiSi's package format :). With 
this approach we gain lots of space for our packages and nearly whole 
distrubiton can be deployed into one CD.

So as soon as i saw this i wanna give it a try in real world :) and see how 
well it is. Here is the result for OpenOffice package, its huge, so i thought 
its a good candicate to test :), tested on Intel(R) Pentium(R) M processor 
1.73GHz with 1gb ram while CPU frequency is 800mhz.

[caglar at zangetsu][~/Desktop/lrzip-0.1.1/OO]> time ../lrzip install.tar
install.tar - compression ratio 3.258

real    8m29.857s
user    7m44.086s
sys     0m1.941s
[caglar at zangetsu][~/Desktop/lrzip-0.1.1/OO]> time lzmash -9 install.tar

real    21m52.749s
user    20m12.399s
sys     0m3.789s

[caglar at zangetsu][~/Desktop/lrzip-0.1.1/OO]> ll -al
toplam 285208
drwxr-xr-x 2 caglar users     4096 Eki 29 18:26 .
drwxr-xr-x 5 caglar users     4096 Eki 29 18:03 ..
-rw-r--r-- 1 caglar users 93372084 Eki 29 18:03 install.tar.lrz
-rw-r--r-- 1 caglar users 99093613 Eki 20 23:39 install.tar.lzma
-rw-r--r-- 1 caglar users 99272133 Eki 29 17:52 openoffice-2.0.4.1-30-20.pisi

[caglar at zangetsu][~/Desktop/lrzip-0.1.1/OO]> time lzmash -d install.tar.lzma

real    0m52.934s
user    0m37.474s
sys     0m1.809s
[caglar at zangetsu][~/Desktop/lrzip-0.1.1/OO]> time ../lrzip -d install.tar.lrz

real    0m56.201s
user    0m40.488s
sys     0m8.345s

So one can easily see lrzip is 3 times faster than lzma in compression and 
gaves smaller results and it seems use much less memory (not well tested, 
will profile later)

Currently it seems amazing to me :), what is your future plan for this? Is it 
remain just a hooby or will make its own way?

Cheers
-- 
S.Çağlar Onur <caglar at pardus.org.tr>
http://cekirdek.pardus.org.tr/~caglar/

Linux is like living in a teepee. No Windows, no Gates and an Apache in house!
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