From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from [140.186.70.92] (port=52094 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1OEKqf-0003cA-0v for qemu-devel@nongnu.org; Tue, 18 May 2010 07:20:34 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.69) (envelope-from ) id 1OEKqd-0005Rq-4A for qemu-devel@nongnu.org; Tue, 18 May 2010 07:20:32 -0400 Received: from mx1.redhat.com ([209.132.183.28]:49089) by eggs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1OEKqc-0005RV-T6 for qemu-devel@nongnu.org; Tue, 18 May 2010 07:20:31 -0400 Message-ID: <4BF277E8.8080606@redhat.com> Date: Tue, 18 May 2010 13:20:08 +0200 From: Gerd Hoffmann MIME-Version: 1.0 Subject: Re: [Qemu-devel] [PATCH] Add QEMU DirectFB display driver References: <1273766038-16808-1-git-send-email-julian.pidancet@citrix.com> <201005160210.25323.paul@codesourcery.com> <4BF1A4FF.4020401@redhat.com> <4BF1A7C9.8030807@codemonkey.ws> <4BF1B866.3030605@codemonkey.ws> <4BF24B57.8020504@redhat.com> <4BF25C78.5070404@redhat.com> <4BF2604E.5060900@redhat.com> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Stefano Stabellini Cc: Kevin Wolf , Julian Pidancet , "qemu-devel@nongnu.org" , Paul Brook On 05/18/10 12:34, Stefano Stabellini wrote: > I am curious about one thing: if the spice client is running on the same > host as the VM and qemu, is there any plan for sharing memory somehow > between the two components? OR is it not believed to be necessary to > reach good performances? Well. We don't have shm for vnc. And I think the reason simply is that it feels fast enougth even without shm. Spice tries to reduce the network bandwith needed with image caching, so with spice the gains by using shm should be even smaller than with vnc. I'm not aware of anyone trying + benchmark it, but I don't expect major gains. cheers, Gerd