From mboxrd@z Thu Jan 1 00:00:00 1970 From: Juergen Gross Subject: Re: [Patch 2 of 2]: PV-domain SMP performance Linux-part Date: Fri, 19 Dec 2008 10:25:03 +0100 Message-ID: <494B686F.1050505@fujitsu-siemens.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Keir Fraser Cc: "xen-devel@lists.xensource.com" List-Id: xen-devel@lists.xenproject.org Keir Fraser wrote: > On 19/12/2008 08:12, "Juergen Gross" > wrote: >> Keir, what is your main objection? >> Putting this interface into the hypervisor or only the Linux part? >> I still think this would be good to have in linux, but our BS2000 port would >> really be much easier having this interface in the hypervisor! >> So if you don't mind adding only the first patch, this would be absolutely >> okay for us. > > I haven't seen any win on any real world setup. So I remain unconvinced, and > it'll need more than you alone championing the patch to get it in. There > have been no other general comments so far (Jan's have been about specific > details). Okay, would the following scenario be "real world" enough? Multiple domUs being busy leading to enough vcpu scheduling, several parallel kernel builds in dom0 acting as benchmark. Juergen -- Juergen Gross Principal Developer IP SW OS6 Telephone: +49 (0) 89 636 47950 Fujitsu Siemens Computers e-mail: juergen.gross@fujitsu-siemens.com Otto-Hahn-Ring 6 Internet: www.fujitsu-siemens.com D-81739 Muenchen Company details: www.fujitsu-siemens.com/imprint.html