Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750741AbWC1Qou (ORCPT ); Tue, 28 Mar 2006 11:44:50 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751097AbWC1Qou (ORCPT ); Tue, 28 Mar 2006 11:44:50 -0500 Received: from ebiederm.dsl.xmission.com ([166.70.28.69]:40347 "EHLO ebiederm.dsl.xmission.com") by vger.kernel.org with ESMTP id S1750741AbWC1Qou (ORCPT ); Tue, 28 Mar 2006 11:44:50 -0500 To: Matt Ayres Cc: devel@openvz.org, Nick Piggin , akpm@osdl.org, linux-kernel@vger.kernel.org, herbert@13thfloor.at, sam@vilain.net, Alexey Kuznetsov , serue@us.ibm.com, "xen-devel@lists.xensource.com" Subject: Re: [Devel] Re: [RFC] Virtualization steps References: <44242A3F.1010307@sw.ru> <44242D4D.40702@yahoo.com.au> <4428FB90.5000601@sw.ru> <44295AE8.7010200@tektonic.net> From: ebiederm@xmission.com (Eric W. Biederman) Date: Tue, 28 Mar 2006 09:42:41 -0700 In-Reply-To: <44295AE8.7010200@tektonic.net> (Matt Ayres's message of "Tue, 28 Mar 2006 10:48:56 -0500") Message-ID: User-Agent: Gnus/5.1007 (Gnus v5.10.7) Emacs/21.4 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1128 Lines: 28 Matt Ayres writes: > I think the Xen guys would disagree with you on this. Xen claims <3% overhead > on the XenSource site. > > Where did you get these figures from? What Xen version did you test? What was > your configuration? Did you have kernel debugging enabled? You can't just post > numbers without the data to back it up, especially when it conflicts greatly > with the Xen developers statements. AFAIK Xen is well on it's way to inclusion > into the mainstream kernel. It doesn't matter. The proof that Xen has more overhead is trivial Xen does more, and Xen clients don't share resources well. Nor is this about Xen vs what we are doing. These are different non conflicting approaches that operating in completely different ways and solve a different set of problems. Xen is about multiple kernels. The alternative is a supped of chroot. Eric - 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/