From mboxrd@z Thu Jan 1 00:00:00 1970 From: Arjan van de Ven Subject: Re: paravirtualization & cr3-cache feature Date: Tue, 13 Feb 2007 08:50:19 +0100 Message-ID: <1171353019.12771.37.camel@laptopd505.fenrus.org> References: <64F9B87B6B770947A9F8391472E032160A66BE0A@ehost011-8.exch011.intermedia.net> <20070212130644.GF25460@amd.com> <64F9B87B6B770947A9F8391472E032160A66C0A6@ehost011-8.exch011.intermedia.net> <20070212140359.GE1879@redhat.com> <2e59e6970702122052x69a4ea9asafd2d0ef438f55ce@mail.gmail.com> <64F9B87B6B770947A9F8391472E032160A66C679@ehost011-8.exch011.intermedia.net> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org To: Dor Laor Return-path: In-Reply-To: <64F9B87B6B770947A9F8391472E032160A66C679-yEcIvxbTEBqsx+V+t5oei8rau4O3wl8o3fe8/T/H7NteoWH0uzbU5w@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: kvm-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Errors-To: kvm-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Id: kvm.vger.kernel.org > Second, we currently use Qemu's device emulation were the ne2k device > does dozens of IO accesses per packet! The rtl8139 is better and does > about 3 IO(MMIO) per packet. The current maximum throughput using the and this is where paravirtualized device drivers can help, like Ingo's network driver or the block driver I'm working on (which currently happily writes 215Mbyte/sec from guest userspace using normal write() to the virtual disk)... -- if you want to mail me at work (you don't), use arjan (at) linux.intel.com Test the interaction between Linux and your BIOS via http://www.linuxfirmwarekit.org ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier. Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642