From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:33399) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eM7Vz-0007Fv-9G for qemu-devel@nongnu.org; Tue, 05 Dec 2017 02:19:40 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1eM7Vy-0007pn-9U for qemu-devel@nongnu.org; Tue, 05 Dec 2017 02:19:39 -0500 Received: from mx1.redhat.com ([209.132.183.28]:39630) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1eM7Vy-0007pR-3R for qemu-devel@nongnu.org; Tue, 05 Dec 2017 02:19:38 -0500 References: <1512444796-30615-1-git-send-email-wei.w.wang@intel.com> <3be9aa23-ca3b-2b16-ecf1-83388365c6b0@redhat.com> <5A264780.2030808@intel.com> From: Jason Wang Message-ID: <668fc7b0-4a3a-7a3b-e939-7a0d80c03166@redhat.com> Date: Tue, 5 Dec 2017 15:19:18 +0800 MIME-Version: 1.0 In-Reply-To: <5A264780.2030808@intel.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: quoted-printable Subject: Re: [Qemu-devel] [virtio-dev] [PATCH v3 0/7] Vhost-pci for inter-VM communication List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Wei Wang , virtio-dev@lists.oasis-open.org, qemu-devel@nongnu.org, mst@redhat.com, marcandre.lureau@redhat.com, stefanha@redhat.com, pbonzini@redhat.com Cc: jan.kiszka@siemens.com, avi.cohen@huawei.com, zhiyong.yang@intel.com On 2017=E5=B9=B412=E6=9C=8805=E6=97=A5 15:15, Wei Wang wrote: > On 12/05/2017 03:01 PM, Jason Wang wrote: >> >> >> On 2017=E5=B9=B412=E6=9C=8805=E6=97=A5 11:33, Wei Wang wrote: >>> Vhost-pci is a point-to-point based inter-VM communication solution.=20 >>> This >>> patch series implements the vhost-pci-net device setup and=20 >>> emulation. The >>> device is implemented as a virtio device, and it is set up via the >>> vhost-user protocol to get the neessary info (e.g the memory info of=20 >>> the >>> remote VM, vring info). >>> >>> Currently, only the fundamental functions are implemented. More=20 >>> features, >>> such as MQ and live migration, will be updated in the future. >>> >>> The DPDK PMD of vhost-pci has been posted to the dpdk mailinglist her= e: >>> http://dpdk.org/ml/archives/dev/2017-November/082615.html >>> >>> v2->v3 changes: >>> 1) static device creation: instead of creating and hot-plugging the >>> =C2=A0=C2=A0=C2=A0 device when receiving a vhost-user msg, the device= is not created >>> =C2=A0=C2=A0=C2=A0 via the qemu booting command line. >>> 2) remove vqs: rq and ctrlq are removed in this version. >>> =C2=A0=C2=A0=C2=A0=C2=A0 - receive vq: the receive vq is not needed a= nymore. The PMD=20 >>> directly >>> =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 shares the remote txq and rxq - g= rab from remote=20 >>> txq to >>> =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 receive packets, and put to rxq t= o send packets. >>> =C2=A0=C2=A0=C2=A0=C2=A0 - ctrlq: the ctrlq is replaced by the first = 4KB metadata area=20 >>> of the >>> =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0 device Bar-2. >>> 3) simpler implementation: the entire implementation has been tailore= d >>> =C2=A0=C2=A0=C2=A0 from ~1800 LOC to ~850 LOC. >> >> Hi: >> >> Any performance numbers you can share? >> > > Hi Jason, > > Performance testing and tuning on the data plane is in progress (btw,=20 > that wouldn't affect the device part patches). > If possible, could we start the device part patch review in the meantim= e? > > Best, > Wei > Hi Wei: Will do, but basically, the cover lacks of the motivation for vhost-pci=20 and I want to see some numbers first since I suspect it can over-perform=20 exist data-path. Thanks From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: virtio-dev-return-2748-cohuck=redhat.com@lists.oasis-open.org Sender: List-Post: List-Help: List-Unsubscribe: List-Subscribe: Received: from lists.oasis-open.org (oasis-open.org [66.179.20.138]) by lists.oasis-open.org (Postfix) with ESMTP id A1D015818C9E for ; Mon, 4 Dec 2017 23:19:38 -0800 (PST) References: <1512444796-30615-1-git-send-email-wei.w.wang@intel.com> <3be9aa23-ca3b-2b16-ecf1-83388365c6b0@redhat.com> <5A264780.2030808@intel.com> From: Jason Wang Message-ID: <668fc7b0-4a3a-7a3b-e939-7a0d80c03166@redhat.com> Date: Tue, 5 Dec 2017 15:19:18 +0800 MIME-Version: 1.0 In-Reply-To: <5A264780.2030808@intel.com> Content-Type: text/plain; charset="utf-8"; format="flowed" Content-Transfer-Encoding: 8bit Content-Language: en-US Subject: Re: [virtio-dev] [PATCH v3 0/7] Vhost-pci for inter-VM communication To: Wei Wang , virtio-dev@lists.oasis-open.org, qemu-devel@nongnu.org, mst@redhat.com, marcandre.lureau@redhat.com, stefanha@redhat.com, pbonzini@redhat.com Cc: jan.kiszka@siemens.com, avi.cohen@huawei.com, zhiyong.yang@intel.com List-ID: On 2017年12月05日 15:15, Wei Wang wrote: > On 12/05/2017 03:01 PM, Jason Wang wrote: >> >> >> On 2017年12月05日 11:33, Wei Wang wrote: >>> Vhost-pci is a point-to-point based inter-VM communication solution. >>> This >>> patch series implements the vhost-pci-net device setup and >>> emulation. The >>> device is implemented as a virtio device, and it is set up via the >>> vhost-user protocol to get the neessary info (e.g the memory info of >>> the >>> remote VM, vring info). >>> >>> Currently, only the fundamental functions are implemented. More >>> features, >>> such as MQ and live migration, will be updated in the future. >>> >>> The DPDK PMD of vhost-pci has been posted to the dpdk mailinglist here: >>> http://dpdk.org/ml/archives/dev/2017-November/082615.html >>> >>> v2->v3 changes: >>> 1) static device creation: instead of creating and hot-plugging the >>>     device when receiving a vhost-user msg, the device is not created >>>     via the qemu booting command line. >>> 2) remove vqs: rq and ctrlq are removed in this version. >>>      - receive vq: the receive vq is not needed anymore. The PMD >>> directly >>>                    shares the remote txq and rxq - grab from remote >>> txq to >>>                    receive packets, and put to rxq to send packets. >>>      - ctrlq: the ctrlq is replaced by the first 4KB metadata area >>> of the >>>               device Bar-2. >>> 3) simpler implementation: the entire implementation has been tailored >>>     from ~1800 LOC to ~850 LOC. >> >> Hi: >> >> Any performance numbers you can share? >> > > Hi Jason, > > Performance testing and tuning on the data plane is in progress (btw, > that wouldn't affect the device part patches). > If possible, could we start the device part patch review in the meantime? > > Best, > Wei > Hi Wei: Will do, but basically, the cover lacks of the motivation for vhost-pci and I want to see some numbers first since I suspect it can over-perform exist data-path. 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