From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id EA51BC67790 for ; Fri, 27 Jul 2018 11:31:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9C7E320899 for ; Fri, 27 Jul 2018 11:31:33 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9C7E320899 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730654AbeG0MxB (ORCPT ); Fri, 27 Jul 2018 08:53:01 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:45520 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1730120AbeG0MxA (ORCPT ); Fri, 27 Jul 2018 08:53:00 -0400 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.rdu2.redhat.com [10.11.54.6]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id A8A6440216E5; Fri, 27 Jul 2018 11:31:30 +0000 (UTC) Received: from redhat.com (ovpn-116-65.ams2.redhat.com [10.36.116.65]) by smtp.corp.redhat.com (Postfix) with SMTP id 7188E21568A3; Fri, 27 Jul 2018 11:31:26 +0000 (UTC) Date: Fri, 27 Jul 2018 14:31:25 +0300 From: "Michael S. Tsirkin" To: Anshuman Khandual Cc: robh@kernel.org, srikar@linux.vnet.ibm.com, aik@ozlabs.ru, jasowang@redhat.com, linuxram@us.ibm.com, linux-kernel@vger.kernel.org, virtualization@lists.linux-foundation.org, hch@infradead.org, paulus@samba.org, joe@perches.com, linuxppc-dev@lists.ozlabs.org, elfring@users.sourceforge.net, haren@linux.vnet.ibm.com, david@gibson.dropbear.id.au Subject: Re: [RFC 0/4] Virtio uses DMA API for all devices Message-ID: <20180727143008-mutt-send-email-mst@kernel.org> References: <20180720035941.6844-1-khandual@linux.vnet.ibm.com> <20180720161541-mutt-send-email-mst@kernel.org> <8f51d2c6-cc0c-9e42-f0fd-a8a33acc8b83@linux.vnet.ibm.com> <20180723120511-mutt-send-email-mst@kernel.org> <4062dd48-2b5b-e454-e860-c6bfe321ebdc@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4062dd48-2b5b-e454-e860-c6bfe321ebdc@linux.vnet.ibm.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.6 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.5]); Fri, 27 Jul 2018 11:31:30 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.5]); Fri, 27 Jul 2018 11:31:30 +0000 (UTC) for IP:'10.11.54.6' DOMAIN:'int-mx06.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'mst@redhat.com' RCPT:'' Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Jul 25, 2018 at 08:56:23AM +0530, Anshuman Khandual wrote: > Results with and without the patches are similar. Thanks! And another thing to try is virtio-net with a fast NIC backend (40G and up). Unfortunately at this point loopback tests stress the host scheduler too much. -- MST From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Michael S. Tsirkin" Subject: Re: [RFC 0/4] Virtio uses DMA API for all devices Date: Fri, 27 Jul 2018 14:31:25 +0300 Message-ID: <20180727143008-mutt-send-email-mst@kernel.org> References: <20180720035941.6844-1-khandual@linux.vnet.ibm.com> <20180720161541-mutt-send-email-mst@kernel.org> <8f51d2c6-cc0c-9e42-f0fd-a8a33acc8b83@linux.vnet.ibm.com> <20180723120511-mutt-send-email-mst@kernel.org> <4062dd48-2b5b-e454-e860-c6bfe321ebdc@linux.vnet.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: <4062dd48-2b5b-e454-e860-c6bfe321ebdc@linux.vnet.ibm.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: virtualization-bounces@lists.linux-foundation.org Errors-To: virtualization-bounces@lists.linux-foundation.org To: Anshuman Khandual Cc: robh@kernel.org, srikar@linux.vnet.ibm.com, linuxram@us.ibm.com, linux-kernel@vger.kernel.org, virtualization@lists.linux-foundation.org, hch@infradead.org, paulus@samba.org, joe@perches.com, linuxppc-dev@lists.ozlabs.org, elfring@users.sourceforge.net, haren@linux.vnet.ibm.com, david@gibson.dropbear.id.au List-Id: virtualization@lists.linuxfoundation.org On Wed, Jul 25, 2018 at 08:56:23AM +0530, Anshuman Khandual wrote: > Results with and without the patches are similar. Thanks! And another thing to try is virtio-net with a fast NIC backend (40G and up). Unfortunately at this point loopback tests stress the host scheduler too much. -- MST