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 real 6m43.608s user 10m1.092s sys 0m3.957s real 10m40.788s user 10m33.363s 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 $ --- On Sat, 1/22/11, cornel panceac <cpanceac at gmail.com> wrote: From: cornel panceac <cpanceac at gmail.com> Subject: Re: [CentOS] Let's talk about compression rates To: "CentOS mailing list" <centos at centos.org> Date: Saturday, January 22, 2011, 10:55 AM 2011/1/22 S Mathias <smathias1972 at yahoo.com> 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?? most have no idea about that. do you know the level of compression used in .7z? -----Inline Attachment Follows----- _______________________________________________ CentOS mailing list CentOS at centos.org http://lists.centos.org/mailman/listinfo/centos -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos/attachments/20110122/d32959e7/attachment-0005.html>