Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1763832AbXJNU7Q (ORCPT ); Sun, 14 Oct 2007 16:59:16 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1759712AbXJNU7B (ORCPT ); Sun, 14 Oct 2007 16:59:01 -0400 Received: from lucidpixels.com ([75.144.35.66]:58481 "EHLO lucidpixels.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759265AbXJNU7A (ORCPT ); Sun, 14 Oct 2007 16:59:00 -0400 Date: Sun, 14 Oct 2007 16:58:58 -0400 (EDT) From: Justin Piszcz X-X-Sender: jpiszcz@p34.internal.lan To: Al Viro cc: Jan Engelhardt , linux-kernel@vger.kernel.org, apiszcz@solarrain.com Subject: Re: In response to kernel compression e-mail a few months ago. In-Reply-To: <20071014205008.GZ8181@ftp.linux.org.uk> Message-ID: References: <20071014205008.GZ8181@ftp.linux.org.uk> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1249 Lines: 34 On Sun, 14 Oct 2007, Al Viro wrote: > On Sun, Oct 14, 2007 at 09:46:15PM +0200, Jan Engelhardt wrote: >> (Obviously we shall pick .7z) > > The hell it is. Take a look at memory footprint of those suckers... > For compression with -mx=9 it does use 500-900 MiB of RAM, that is true. For decompression, 50-70 MiB. Each have their pros/cons but nothing can compress the kernel any further than 7z, supports stdin/stdout and also has a native windows port. I used to strictly use bzip2 for backups and such but if I can pick off an additional 20-30% more than bzip2 for my backups which I will not use often, 7zip seems to be the winner for space savings and possibly for bandwidth/cost savings.. compress: PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 10544 war 20 0 700m 681m 1632 S 141 20.7 1:41.46 7z decompress: PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 11927 war 20 0 71256 66m 1536 R 88 2.0 0:04.07 7z Justin. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/