From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chris Wright Subject: Re: [GIT PULL] AlacrityVM guest drivers for 2.6.33 Date: Tue, 22 Dec 2009 16:02:10 -0800 Message-ID: <20091223000210.GA6518@sequoia.sous-sol.org> References: <4B2FA655.6030205@gmail.com> <4B2FAE7B.9030005@codemonkey.ws> <4B2FB3F1.5080808@gmail.com> <4B300EF8.8010602@codemonkey.ws> <87637zdy9g.fsf@basil.nowhere.org> <4B30E654.40702@codemonkey.ws> <20091222162110.GG10314@basil.fritz.box> <4B30F375.6050103@codemonkey.ws> <20091222173326.GH10314@basil.fritz.box> <4B3136AA.50204@codemonkey.ws> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Andi Kleen , Gregory Haskins , Avi Kivity , Ingo Molnar , kvm@vger.kernel.org, Andrew Morton , torvalds@linux-foundation.org, "linux-kernel@vger.kernel.org" , netdev@vger.kernel.org, "alacrityvm-devel@lists.sourceforge.net" To: Anthony Liguori Return-path: Received: from sous-sol.org ([216.99.217.87]:37574 "EHLO sequoia.sous-sol.org" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751488AbZLWADp (ORCPT ); Tue, 22 Dec 2009 19:03:45 -0500 Content-Disposition: inline In-Reply-To: <4B3136AA.50204@codemonkey.ws> Sender: kvm-owner@vger.kernel.org List-ID: * Anthony Liguori (anthony@codemonkey.ws) wrote: > The > virtio-net setup probably made extensive use of pinning and other tricks > to make things faster than a normal user would see them. It ends up > creating a perfect combination of batching which is pretty much just > cooking the mitigation schemes to do extremely well for one benchmark. Just pinning, the rest is stock virtio features like mergeable rx buffers, GRO, GSO (tx mitigation is actually disabled). Certainly doesn't show throughput in terms of cpu cycle cost (scaling) nor latency per-packet (exit and mitigation). thanks, -chris