Received: by 2002:ac0:a5a7:0:0:0:0:0 with SMTP id m36-v6csp690267imm; Fri, 27 Jul 2018 04:32:36 -0700 (PDT) X-Google-Smtp-Source: AAOMgpdji00gchMLrB9r+RHxzmGES34xSGU0tUxRXaNVrlnATs/RKe/So1eaIQNStOfe3Ebv3YPF X-Received: by 2002:a62:3d41:: with SMTP id k62-v6mr6283840pfa.35.1532691156383; Fri, 27 Jul 2018 04:32:36 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1532691156; cv=none; d=google.com; s=arc-20160816; b=ECfs2FQuaXllXSUq35PurFup0zBAR2Y7lcBYlhIbQNXsNQLibu+XUnGgUmLR6mNSqp mZ9mqTHJB0iBokl51dccuknkBJtC/bfxMzKFQUWdYNWJyYavSmkh6m3L9kGeBsex4R7+ nOjYsQnn7nTEti25dwQe2ptFXUiVu0QQDVM9r2XfSa1uFauW8GqvVJlGX0mVqxYOxlW3 3UhGG4xjycxqL6YrLHYYxv6jA7hkMvmnWbqREYx2tKvWll6EVh0j6TbWjVJO9aEaJ5e/ GiahbmLsKuEMdh456wetDS5zs9nd6unlx0jLU8D3PXtNhUr+3bbWp5AtEV5+IeLBFh4g wtHA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:in-reply-to:content-disposition :mime-version:references:message-id:subject:cc:to:from:date :arc-authentication-results; bh=F+PvHj+VaA8VIDuC81kpRqkEjpwHfRcMvsLsARPjMjQ=; b=Jy8AGWWNRbIzMsSYqCSIEDOMoE5d83bVp1eaX4WhoGVfgZ9Js68wxknOSVWAPLTVpI g569S6iXk6B7KVzPKPW/kQ3Auc2sEQVnXxuY6b5RVZ2/Rqk18mNXm6ob4LVe+PzBYsGr 9A7mFo8TwCjYEkrKw7Sl44AbvlIMaQrnalf2FlcjKtOoF8p91CwNilPtq5Y/PWVEL5Oe /CDly8CC8wJdA8BRZCeC7hb9hxgslhiZ1rzrRgIwuLVmdP6e4A39ReM4sSElrvOtmX2V DVT8jyqa5blXuvPnY5SFTKYKoZ2ZbQ6uK9w0CKivRmhl8Am93Zva0LEa2zvz0wIl8pcn i7nA== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=redhat.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id c3-v6si3221356plr.405.2018.07.27.04.32.20; Fri, 27 Jul 2018 04:32:36 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=redhat.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730612AbeG0MxB (ORCPT + 99 others); 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