Re: Let's talk about compression rates

2011-01-23 Thread Jochen Schulz
S Mathias: > > [7z] > > real 6m43.608s > user 10m1.092s > sys 0m3.957s > > [xz] > real 10m40.788s > user 10m33.363s > sys 0m2.106s Apparently, 7z uses multiple cores, while xz doesn't. Otherwise, performance is mostly the same. J. -- I wish I could do more to put the sparkle back into

Re: Let's talk about compression rates

2011-01-22 Thread Alex
On Sat, Jan 22, 2011 at 4:44 AM, S Mathias wrote: > I presume kernel.org knows this. Why doesn't people use e.g.: XZ? > > This is the same as in PDF's. DJVU files could be amazing too. They could > compress [convert] a 400 MByte PDF to a 20 MByte DJVU. Amazing. > > Why don't these technologies sp

Re: Let's talk about compression rates

2011-01-22 Thread T o n g
On Sat, 22 Jan 2011 07:57:21 -0800, S Mathias wrote: > $ time 7z a -mx=9 linux-2.6.37.tar.7z linux-2.6.37.tar; echo; time xz -9 > -z linux-2.6.37.tar; echo; ls -lS was the linux-2.6.37.tar already in cache memory? If not, and you do xz first, you will see more dramatic results. -- Tong (remov

Re: Let's talk about compression rates

2011-01-22 Thread Javier Vasquez
On Sat, Jan 22, 2011 at 4:44 AM, S Mathias wrote: > ... > > I presume kernel.org knows this. Why doesn't people use e.g.: XZ? > ... FYI, archlinux is already using xz by default on their packaging system, and for kernel lzma, which at least improves compression ratio a bit. -- Javier. -- To

Re: Let's talk about compression rates

2011-01-22 Thread S Mathias
wow... http://pastebin.com/raw.php?i=ihLLHyiT $ time 7z a -mx=9 linux-2.6.37.tar.7z linux-2.6.37.tar; echo; time xz -9 -z linux-2.6.37.tar; echo; ls -lS 7-Zip 9.13 beta Copyright (c) 1999-2010 Igor Pavlov 2010-04-15 p7zip Version 9.13 (locale=en_US.utf8,Utf16=on,HugeFiles=on,2 CPUs) Scanning

Re: Let's talk about compression rates

2011-01-22 Thread Sven Joachim
On 2011-01-22 11:44 +0100, S Mathias wrote: > $ ls -Sl > total 461252 > -rw-rw-r--. 1 g g 111709730 Jan 22 11:06 linux-2.6.37.zip > -rw-rw-r--. 1 g g 93174605 Jan 22 11:03 linux-2.6.37.tar.gz > -rw-rw-r--. 1 g g 73552510 Jan 22 11:10 linux-2.6.37.tar.bz2 > -rw-rw-r--. 1 g g 66333786 Jan 22 11:1

Re: Let's talk about compression rates

2011-01-22 Thread Jerome BENOIT
On 22/01/11 18:44, S Mathias wrote: http://pastebin.com/raw.php?i=MwDnhknf $ ls -Sl total 461252 -rw-rw-r--. 1 g g 111709730 Jan 22 11:06 linux-2.6.37.zip -rw-rw-r--. 1 g g 93174605 Jan 22 11:03 linux-2.6.37.tar.gz -rw-rw-r--. 1 g g 73552510 Jan 22 11:10 linux-2.6.37.tar.bz2 -rw-rw-r--. 1 g

Let's talk about compression rates

2011-01-22 Thread S Mathias
http://pastebin.com/raw.php?i=MwDnhknf $ ls -Sl total 461252 -rw-rw-r--. 1 g g 111709730 Jan 22 11:06 linux-2.6.37.zip -rw-rw-r--. 1 g g 93174605 Jan 22 11:03 linux-2.6.37.tar.gz -rw-rw-r--. 1 g g 73552510 Jan 22 11:10 linux-2.6.37.tar.bz2 -rw-rw-r--. 1 g g 66333786 Jan 22 11:16 linux-2.6.37.7z