Re: Let's talk about compression rates
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 my marriage. [Agree] [Disagree] http://www.slowlydownward.com/NODATA/data_enter2.html signature.asc Description: Digital signature
Let's talk about compression rates
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 -rw-rw-r--. 1 g g 64035788 Jan 22 11:16 linux-2.6.37.tar.7z -rw-rw-r--. 1 g g 63480808 Jan 22 11:20 linux-2.6.37.tar.xz $ 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 spread?? Any opinions regarding it? Thanks. -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/607661.44460...@web121409.mail.ne1.yahoo.com
Re: Let's talk about compression rates
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 g 66333786 Jan 22 11:16 linux-2.6.37.7z -rw-rw-r--. 1 g g 64035788 Jan 22 11:16 linux-2.6.37.tar.7z -rw-rw-r--. 1 g g 63480808 Jan 22 11:20 linux-2.6.37.tar.xz $ I presume kernel.org knows this. Why doesn't people use e.g.: XZ? XZ is very recent compare BZ2 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 spread?? Any opinions regarding it? Thanks. -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/4d3aba46.6090...@rezozer.net
Re: Let's talk about compression rates
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 11:16 linux-2.6.37.7z -rw-rw-r--. 1 g g 64035788 Jan 22 11:16 linux-2.6.37.tar.7z -rw-rw-r--. 1 g g 63480808 Jan 22 11:20 linux-2.6.37.tar.xz $ I presume kernel.org knows this. Why doesn't people use e.g.: XZ? It's rather new and not everybody has it yet, while gzip and bzip2 are rather ubiquitous. Besides, a lot of scripts will have to be changed if kernel.org drops .bz2 files and replaces them with .xz files, so this will probably not be done soon. 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 spread?? They do, albeit slowly. Slackware has already moved to xz compressed tarballs for their distribution, GNU folks are providing them as well, Emacs 23.2 transparently deals with xz compressed files, dpkg 1.15.6 supports xz compressed Debian packages etc. Any opinions regarding it? I hope that Debian FTP masters will accept xz-compressed .debs soon and that they will become standard at some time, so that more packages can fit on the CDs and download time on upgrades decreases. Sven -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/87aaitumwb@turtle.gmx.de
Re: Let's talk about compression rates
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 Creating archive linux-2.6.37.tar.7z Compressing linux-2.6.37.tar Everything is Ok real6m43.608s user10m1.092s sys 0m3.957s real10m40.788s user10m33.363s sys 0m2.106s total 120264 -rw-rw-r--. 1 g g 61570448 Jan 22 15:42 linux-2.6.37.tar.xz -rw-rw-r--. 1 g g 61567410 Jan 22 16:13 linux-2.6.37.tar.7z $ -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/980971.87919...@web121404.mail.ne1.yahoo.com
Re: Let's talk about compression rates
On Sat, Jan 22, 2011 at 4:44 AM, S Mathias smathias1...@yahoo.com 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 UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/aanlktimwhdsooj20cxeznnrwkarxfknm+bhh4y5sr...@mail.gmail.com
Re: Let's talk about compression rates
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 (remove underscore(s) to reply) http://xpt.sourceforge.net/techdocs/ http://xpt.sourceforge.net/tools/ -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/ihf3gc$s8n$1...@dough.gmane.org
Re: Let's talk about compression rates
On Sat, Jan 22, 2011 at 4:44 AM, S Mathias smathias1...@yahoo.com 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 spread?? Any opinions regarding it? Thanks. I know that at least in the Windows world, .7z is starting to become almost as common as .rar -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/AANLkTinVq++H7G1WV-DnJ0y+aDvr2e=wpcj-5yasn...@mail.gmail.com
