From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754027Ab2DRRgx (ORCPT ); Wed, 18 Apr 2012 13:36:53 -0400 Received: from ud10.udmedia.de ([194.117.254.50]:51220 "EHLO mail.ud10.udmedia.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751790Ab2DRRgw (ORCPT ); Wed, 18 Apr 2012 13:36:52 -0400 Date: Wed, 18 Apr 2012 19:36:49 +0200 From: Markus Trippelsdorf To: "H. Peter Anvin" Cc: Lasse Collin , Randy Dunlap , qasdfgtyuiop , linux-kernel , Andrew Morton , alain@knaff.lu, albin.tonnerre@free-electrons.com Subject: Re: [PATCH] kconfig: update compression algorithm info Message-ID: <20120418173649.GB6165@x4> References: <4F8DF90B.1090002@xenotime.net> <20120418194055.2d929e58@tukaani.org> <4F8EEFB5.8040604@zytor.com> <20120418200929.086ce3a7@tukaani.org> <20120418172349.GA6165@x4> <4F8EF9E3.7030801@zytor.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4F8EF9E3.7030801@zytor.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2012.04.18 at 10:29 -0700, H. Peter Anvin wrote: > On 04/18/2012 10:23 AM, Markus Trippelsdorf wrote: > > > > When btrfs will finally implement LZ4 compression this would be the obvious > > candidate for the fastest boot algo, because its decompression speed is > > amazing. > > > > Uh, no (and what does btrfs have to do with anything here?) I was referring to a possible library implementation. > The issue is that the ratio of I/O speed to CPU can mean that a slower > decompression algorithm with better compression can still win, > time-wise, if your media is slow and your CPU is fast. Sure. Only measurements will tell... -- Markus