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[ { "id": 81966, "web_url": "http://patches.dpdk.org/comment/81966/", "msgid": "<86228AFD5BCD8E4EBFD2B90117B5E81E630BF9B0@SHSMSX103.ccr.corp.intel.com>", "list_archive_url": "https://inbox.dpdk.org/dev/86228AFD5BCD8E4EBFD2B90117B5E81E630BF9B0@SHSMSX103.ccr.corp.intel.com", "date": "2018-06-08T02:11:46", "subject": "Re: [dpdk-dev] [PATCH 0/7] support VIRTIO_F_IN_ORDER feature", "submitter": { "id": 17, "url": "http://patches.dpdk.org/api/people/17/?format=api", "name": "Marvin Liu", "email": "yong.liu@intel.com" }, "content": "Sorry, add missing loopback performance comparison.\n\n +---------+----------+----------------+----------------+\n |Loopback |1 Queue |2 Queues |4 Queues |\n +---------+----------+----------------+----------------+\n |Inorder |6.2Mpps |9.5 ~ 11.9Mpps |10.6 ~ 11.3Mpps |\n +---------+----------+----------------+----------------+\n |Normal |7.5Mpps |7.7 ~ 9.0Mpps |7.6 ~ 7.8Mpps |\n +---------+----------+----------------+----------------+\n\nThanks,\nMarvin\n\n> -----Original Message-----\n> From: Liu, Yong\n> Sent: Friday, June 08, 2018 5:07 PM\n> To: maxime.coquelin@redhat.com; Bie, Tiwei <tiwei.bie@intel.com>\n> Cc: Wang, Zhihong <zhihong.wang@intel.com>; dev@dpdk.org; Liu, Yong\n> <yong.liu@intel.com>\n> Subject: [PATCH 0/7] support VIRTIO_F_IN_ORDER feature\n> \n> In latest virtio-spec, new feature bit VIRTIO_F_IN_ORDER was introduced.\n> When this feature has been negotiated, virtio driver will use\n> descriptors in ring order: starting from offset 0 in the table, and\n> wrapping around at the end of the table. Vhost devices will always use\n> descriptors in the same order in which they have been made available.\n> This can simplify vhost and device code as desc/used/avail ring are\n> using same index.\n> \n> Based on updated virtio-spec, this series realized IN_ORDER prototype\n> in virtio driver. Due to new [RT]x path added into selection, also add\n> two new parameters mrg_rx and in_order into virtio-user vdev parameters\n> list. This will allow user to configure feature bits thus can impact\n> [RT]x path selection.\n> \n> IN_ORDER can improve virtio/vhost performance. This patch implement\n> virtio driver part only, we can see significant gain there. As a result\n> it impacts vhost performance a little since there’s no dedicated Rx/Tx\n> implementation on vhost side. This can be added in another patch later.\n> \n> Performance of virtio user with IN_ORDER feature:\n> \n> Platform: Purely\n> CPU: Intel(R) Xeon(R) Platinum 8160 CPU @ 2.10GHz\n> DPDK baseline: 18.05\n> Setup: testpmd with vhost vdev + testpmd with virtio vdev\n> \n> +--------------+----------+----------+---------+\n> |Vhost->Virtio |1 Queue |2 Queues |4 Queues |\n> +--------------+----------+----------+---------+\n> |Inorder |12.9Mpps |25.4Mpps |31.6Mpps |\n> |Normal |12.1Mpps |18.5Mpps |18.9Mpps |\n> +--------------+----------+----------+---------+\n> \n> +--------------+----------+----------------+---------+\n> |Virtio->Vhost |1 Queue |2 Queues |4 Queues |\n> +--------------+----------+----------------+---------+\n> |Inorder |16.4Mpps |11.9 ~ 19.5Mpps |11.8Mpps |\n> |Normal |13.3Mpps |9.8 ~ 14Mpps |10.5Mpps |\n> +--------------+----------+----------------+---------+\n> \n> +---------+----------+----------------+----------------+\n> |Loopback |1 Queue |2 Queues |4 Queues |\n> +---------+----------+----------------+----------------+\n> |Inorder |6.2Mpps |9.5 ~ 11.9Mpps |10.6 ~ 11.3Mpps |\n> +---------+----------+----------------+----------------+\n> \n> Marvin Liu (7):\n> vhost: announce VIRTIO_F_IN_ORDER support\n> net/virtio: add VIRTIO_F_IN_ORDER definition\n> net/virtio-user: add mgr_rxbuf and in_order vdev parameters\n> net/virtio: free IN_ORDER descriptors\n> net/virtio: support IN_ORDER Rx and Tx\n> net/virtio: add IN_ORDER Rx/Tx into selection\n> net/virtio: annouce VIRTIO_F_IN_ORDER support\n> \n> drivers/net/virtio/virtio_ethdev.c | 31 +-\n> drivers/net/virtio/virtio_ethdev.h | 7 +\n> drivers/net/virtio/virtio_pci.h | 8 +\n> drivers/net/virtio/virtio_rxtx.c | 618 ++++++++++++++++--\n> .../net/virtio/virtio_user/virtio_user_dev.c | 10 +-\n> .../net/virtio/virtio_user/virtio_user_dev.h | 3 +-\n> drivers/net/virtio/virtio_user_ethdev.c | 33 +-\n> drivers/net/virtio/virtqueue.c | 8 +\n> drivers/net/virtio/virtqueue.h | 2 +\n> lib/librte_vhost/socket.c | 4 +\n> lib/librte_vhost/vhost.h | 10 +-\n> 11 files changed, 668 insertions(+), 66 deletions(-)\n> \n> --\n> 2.17.0", "headers": { "Return-Path": "<dev-bounces@dpdk.org>", "X-Original-To": "patchwork@dpdk.org", "Delivered-To": "patchwork@dpdk.org", "Received": [ "from [92.243.14.124] (localhost [127.0.0.1])\n\tby dpdk.org (Postfix) with ESMTP id E56825592;\n\tFri, 8 Jun 2018 04:11:51 +0200 (CEST)", "from mga18.intel.com (mga18.intel.com [134.134.136.126])\n\tby dpdk.org (Postfix) with ESMTP id D00BA37A6\n\tfor <dev@dpdk.org>; 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d=\"scan'208\";a=\"55662018\"", "From": "\"Liu, Yong\" <yong.liu@intel.com>", "To": "\"maxime.coquelin@redhat.com\" <maxime.coquelin@redhat.com>, \"Bie, Tiwei\"\n\t<tiwei.bie@intel.com>", "CC": "\"Wang, Zhihong\" <zhihong.wang@intel.com>, \"dev@dpdk.org\" <dev@dpdk.org>", "Thread-Topic": "[PATCH 0/7] support VIRTIO_F_IN_ORDER feature", "Thread-Index": "AQHT/sb8VJEL91BnTk++uuVzy0l4MaRVniYw", "Date": "Fri, 8 Jun 2018 02:11:46 +0000", "Message-ID": "<86228AFD5BCD8E4EBFD2B90117B5E81E630BF9B0@SHSMSX103.ccr.corp.intel.com>", "References": "<20180608090724.20855-1-yong.liu@intel.com>", "In-Reply-To": "<20180608090724.20855-1-yong.liu@intel.com>", "Accept-Language": "zh-CN, en-US", "Content-Language": "en-US", "X-MS-Has-Attach": "", "X-MS-TNEF-Correlator": "", "x-titus-metadata-40": "eyJDYXRlZ29yeUxhYmVscyI6IiIsIk1ldGFkYXRhIjp7Im5zIjoiaHR0cDpcL1wvd3d3LnRpdHVzLmNvbVwvbnNcL0ludGVsMyIsImlkIjoiZGRlYmUzNDktNTM2MC00NWI0LWI2NDUtMGNiYzBkNTNmMDJjIiwicHJvcHMiOlt7Im4iOiJDVFBDbGFzc2lmaWNhdGlvbiIsInZhbHMiOlt7InZhbHVlIjoiQ1RQX05UIn1dfV19LCJTdWJqZWN0TGFiZWxzIjpbXSwiVE1DVmVyc2lvbiI6IjE3LjEwLjE4MDQuNDkiLCJUcnVzdGVkTGFiZWxIYXNoIjoiMHNVbm1aUTB4VGhvY3gyQkliTWJMMkJqbStmVm5lZTZHZnZwUFhTNnNuaGg3RFMzbnZjMWVlUjZtZ25pNFZzTSJ9", "x-ctpclassification": "CTP_NT", "dlp-product": "dlpe-windows", "dlp-version": "11.0.200.100", "dlp-reaction": "no-action", "x-originating-ip": "[10.239.127.40]", "Content-Type": "text/plain; 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