From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262037AbVGVFGU (ORCPT ); Fri, 22 Jul 2005 01:06:20 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262034AbVGVFGT (ORCPT ); Fri, 22 Jul 2005 01:06:19 -0400 Received: from e32.co.us.ibm.com ([32.97.110.130]:30343 "EHLO e32.co.us.ibm.com") by vger.kernel.org with ESMTP id S262037AbVGVFEV (ORCPT ); Fri, 22 Jul 2005 01:04:21 -0400 To: Mark Hahn cc: linux-kernel@vger.kernel.org Reply-To: Gerrit Huizenga From: Gerrit Huizenga Subject: Re: 2.6.13-rc3-mm1 (ckrm) In-reply-to: Your message of Fri, 22 Jul 2005 00:53:58 EDT. Date: Thu, 21 Jul 2005 22:03:29 -0700 Message-Id: Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 22 Jul 2005 00:53:58 EDT, Mark Hahn wrote: > > > > yes, that's the crux. CKRM is all about resolving conflicting resource > > > > demands in a multi-user, multi-server, multi-purpose machine. this is a > > > > huge undertaking, and I'd argue that it's completely inappropriate for > > > > *most* servers. that is, computers are generally so damn cheap that > > > > the clear trend is towards dedicating a machine to a specific purpose, > > > > rather than running eg, shell/MUA/MTA/FS/DB/etc all on a single machine. > > > > This is a big NAK - if computers are so damn cheap, why is virtualization > > and consolidation such a big deal? Well, the answer is actually that > > yes, you did miss my point. I'm actually arguing that it's bad design > to attempt to arbitrate within a single shared user-space. you make > the fast path slower and less maintainable. if you are really concerned > about isolating many competing servers on a single piece of hardware, then > run separate virtualized environments, each with its own user-space. I'm willing to agree to disagree. I'm in favor of full virtualization as well, as it is appropriate to certain styles of workloads. I also have enough end users who also want to share user level, share tasks, yet also have some level of balancing between the resource consumption of the various environments. I don't think you are one of those end users, though. I don't think I'm required to make everyone happy all the time. ;) BTW, does your mailer purposefully remove cc:'s? Seems like that is normally considered impolite. gerrit