From patchwork Sat May 28 23:36:32 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Wang, Wei W" X-Patchwork-Id: 9139493 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id EA39E60221 for ; Sat, 28 May 2016 17:34:32 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id DFCB12793B for ; Sat, 28 May 2016 17:34:32 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id D4AD627CCD; Sat, 28 May 2016 17:34:32 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.0 required=2.0 tests=BAYES_00, DATE_IN_FUTURE_06_12, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 66A8E2793B for ; Sat, 28 May 2016 17:34:32 +0000 (UTC) Received: from localhost ([::1]:53778 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1b6i87-00016D-Is for patchwork-qemu-devel@patchwork.kernel.org; Sat, 28 May 2016 13:34:31 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:55808) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1b6gLz-0000jL-20 for qemu-devel@nongnu.org; Sat, 28 May 2016 11:40:43 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1b6gLs-0004D4-RT for qemu-devel@nongnu.org; Sat, 28 May 2016 11:40:41 -0400 Received: from mga09.intel.com ([134.134.136.24]:33626) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1b6gLs-0004CO-F1 for qemu-devel@nongnu.org; Sat, 28 May 2016 11:40:36 -0400 Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by orsmga102.jf.intel.com with ESMTP; 28 May 2016 08:40:33 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.26,379,1459839600"; d="scan'208";a="112100532" Received: from unknown (HELO otc18.sh.intel.com.com) ([10.239.48.138]) by fmsmga004.fm.intel.com with ESMTP; 28 May 2016 08:40:32 -0700 From: Wei Wang To: kvm@vger.kernel.org, qemu-devel@nongnu.org, virtio-comment@lists.oasis-open.org, virtio-dev@lists.oasis-open.org, mst@redhat.com, stefanha@redhat.com, pbonzini@redhat.com Date: Sun, 29 May 2016 07:36:32 +0800 Message-Id: <1464478595-146533-4-git-send-email-wei.w.wang@intel.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1464478595-146533-1-git-send-email-wei.w.wang@intel.com> References: <1464478595-146533-1-git-send-email-wei.w.wang@intel.com> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 134.134.136.24 X-Mailman-Approved-At: Sat, 28 May 2016 13:31:02 -0400 Subject: [Qemu-devel] [PATCH 3/6] Vhost-pci RFC: Benefits to KVM X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Wei Wang Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP Signed-off-by: Wei Wang --- Benefits | 8 ++++++++ 1 file changed, 8 insertions(+) create mode 100644 Benefits diff --git a/Benefits b/Benefits new file mode 100644 index 0000000..7d10485 --- /dev/null +++ b/Benefits @@ -0,0 +1,8 @@ +The vhost-pci design provides KVM with a faster and more scalable inter-VM +communication mechanism. In NFV usages and today's virtualized datacenters, +where multiple VMs connect to a centralized vswitch to communicate, the more +the VMs connect to (or chained via) the vswitch, the lower the inter-VM +communication throughput will be. The vhost-pci design successfully resolves +this scalability issue and makes KVM a better hypervisor for NFV and +datacenters. +