From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from [140.186.70.92] (port=56452 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1Oakqi-0004vR-9r for qemu-devel@nongnu.org; Mon, 19 Jul 2010 03:33:18 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.69) (envelope-from ) id 1Oakqh-0003CY-7p for qemu-devel@nongnu.org; Mon, 19 Jul 2010 03:33:16 -0400 Received: from mx1.redhat.com ([209.132.183.28]:7842) by eggs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1Oakqh-0003CL-0q for qemu-devel@nongnu.org; Mon, 19 Jul 2010 03:33:15 -0400 Date: Mon, 19 Jul 2010 10:33:12 +0300 From: Gleb Natapov Subject: Re: [Qemu-devel] Question about qemu firmware configuration (fw_cfg) device Message-ID: <20100719073312.GY4689@redhat.com> References: <20100717095059.GA19767@amd.home.annexia.org> <20100717095353.GB19767@amd.home.annexia.org> <269D196D-8CE8-4E24-8EE1-39756AC55F7F@suse.de> <20100718200942.GL13194@amd.home.annexia.org> <44FD4F00-843D-41C8-B21A-148D16745015@suse.de> <20100719062356.GU4689@redhat.com> <20100719072802.GO13194@amd.home.annexia.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20100719072802.GO13194@amd.home.annexia.org> List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: "Richard W.M. Jones" Cc: Alexander Graf , qemu-devel@nongnu.org On Mon, Jul 19, 2010 at 08:28:02AM +0100, Richard W.M. Jones wrote: > On Mon, Jul 19, 2010 at 09:23:56AM +0300, Gleb Natapov wrote: > > That what I am warring about too. If we are adding device we have to be > > sure such device can actually exist on real hw too otherwise we may have > > problems later. > > I don't understand why the constraints of real h/w have anything to do > with this. Can you explain? > Each time we do something not architectural it cause us troubles later. So constraints of real h/w is our constrains to. > > Also 1 second on 100M file does not look like huge gain to me. > > Every second counts. We're trying to get libguestfs boot times down > from 8-12 seconds to 4-5 seconds. For many cases it's an interactive > program. > So what about making initrd smaller? I remember managing two distribution in 64M flash in embedded project. -- Gleb.