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{ "id": 86265, "url": "https://patches.dpdk.org/api/covers/86265/?format=api", "web_url": "https://patches.dpdk.org/project/dpdk/cover/1610367387-117188-1-git-send-email-jiayu.hu@intel.com/", "project": { "id": 1, "url": "https://patches.dpdk.org/api/projects/1/?format=api", "name": "DPDK", "link_name": "dpdk", "list_id": "dev.dpdk.org", "list_email": "dev@dpdk.org", "web_url": "http://core.dpdk.org", "scm_url": "git://dpdk.org/dpdk", "webscm_url": "http://git.dpdk.org/dpdk", "list_archive_url": "https://inbox.dpdk.org/dev", "list_archive_url_format": "https://inbox.dpdk.org/dev/{}", "commit_url_format": "" }, "msgid": "<1610367387-117188-1-git-send-email-jiayu.hu@intel.com>", "list_archive_url": "https://inbox.dpdk.org/dev/1610367387-117188-1-git-send-email-jiayu.hu@intel.com", "date": "2021-01-11T12:16:25", "name": "[v4,0/2] Enhance Async Enqueue for Small Packets", "submitter": { "id": 539, "url": "https://patches.dpdk.org/api/people/539/?format=api", "name": "Hu, Jiayu", "email": "jiayu.hu@intel.com" }, "mbox": "https://patches.dpdk.org/project/dpdk/cover/1610367387-117188-1-git-send-email-jiayu.hu@intel.com/mbox/", "series": [ { "id": 14627, "url": "https://patches.dpdk.org/api/series/14627/?format=api", "web_url": "https://patches.dpdk.org/project/dpdk/list/?series=14627", "date": "2021-01-11T12:16:25", "name": "Enhance Async Enqueue for Small Packets", "version": 4, "mbox": "https://patches.dpdk.org/series/14627/mbox/" } ], "comments": "https://patches.dpdk.org/api/covers/86265/comments/", "headers": { "Return-Path": "<dev-bounces@dpdk.org>", "X-Original-To": "patchwork@inbox.dpdk.org", "Delivered-To": "patchwork@inbox.dpdk.org", "Received": [ "from mails.dpdk.org (mails.dpdk.org [217.70.189.124])\n\tby inbox.dpdk.org (Postfix) with ESMTP id 36E94A04B5;\n\tMon, 11 Jan 2021 06:46:19 +0100 (CET)", "from [217.70.189.124] (localhost [127.0.0.1])\n\tby mails.dpdk.org (Postfix) with ESMTP id 0B6D4140CDC;\n\tMon, 11 Jan 2021 06:46:19 +0100 (CET)", "from mga09.intel.com (mga09.intel.com [134.134.136.24])\n by mails.dpdk.org (Postfix) with ESMTP id ECBDC140CDB\n for <dev@dpdk.org>; Mon, 11 Jan 2021 06:46:16 +0100 (CET)", "from fmsmga004.fm.intel.com ([10.253.24.48])\n by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384;\n 10 Jan 2021 21:46:15 -0800", "from npg_dpdk_virtio_jiayuhu_07.sh.intel.com ([10.67.118.193])\n by fmsmga004.fm.intel.com with ESMTP; 10 Jan 2021 21:46:14 -0800" ], "IronPort-SDR": [ "\n tA6pJWgHKFcUj74V2qnRoLwP/ValDBZCm4WbJrQGovxouTx3A1RZRQX+kx1ztjmM7egfafc4hf\n uSyz4MvhkLIA==", "\n XW9u07t5jsfw0woZovqhCMLkm5q68HyFOspBY6jLkWtj30CtSQbCygPut+NG7M6+cwF7sbJ/WA\n JZd089gCJFUQ==" ], "X-IronPort-AV": [ "E=McAfee;i=\"6000,8403,9860\"; a=\"177957758\"", "E=Sophos;i=\"5.79,337,1602572400\"; d=\"scan'208\";a=\"177957758\"", "E=Sophos;i=\"5.79,337,1602572400\"; d=\"scan'208\";a=\"396933090\"" ], "X-ExtLoop1": "1", "From": "Jiayu Hu <jiayu.hu@intel.com>", "To": "dev@dpdk.org", "Cc": "maxime.coquelin@redhat.com, chenbo.xia@intel.com, cheng1.jiang@intel.com,\n yinan.wang@intel.com, jiayu.hu@intel.com", "Date": "Mon, 11 Jan 2021 07:16:25 -0500", "Message-Id": "<1610367387-117188-1-git-send-email-jiayu.hu@intel.com>", "X-Mailer": "git-send-email 2.7.4", "In-Reply-To": "<1608884934-106977-1-git-send-email-jiayu.hu@intel.com>", "References": "<1608884934-106977-1-git-send-email-jiayu.hu@intel.com>", "Subject": "[dpdk-dev] [PATCH v4 0/2] Enhance Async Enqueue for Small Packets", "X-BeenThere": "dev@dpdk.org", "X-Mailman-Version": "2.1.29", "Precedence": "list", "List-Id": "DPDK patches and discussions <dev.dpdk.org>", "List-Unsubscribe": "<https://mails.dpdk.org/options/dev>,\n <mailto:dev-request@dpdk.org?subject=unsubscribe>", "List-Archive": "<http://mails.dpdk.org/archives/dev/>", "List-Post": "<mailto:dev@dpdk.org>", "List-Help": "<mailto:dev-request@dpdk.org?subject=help>", "List-Subscribe": "<https://mails.dpdk.org/listinfo/dev>,\n <mailto:dev-request@dpdk.org?subject=subscribe>", "Errors-To": "dev-bounces@dpdk.org", "Sender": "\"dev\" <dev-bounces@dpdk.org>" }, "content": "Async enqueue offloads large copies to DMA devices, and small copies\nare still performed by the CPU. However, it requires users to get\nenqueue completed packets by rte_vhost_poll_enqueue_completed(), even\nif they are completed by the CPU when rte_vhost_submit_enqueue_burst()\nreturns. This design incurs extra overheads of tracking completed\npktmbufs and function calls, thus degrading performance on small packets.\n\nThe first patch cleans up async enqueue code, and the second patch\nenables rte_vhost_submit_enqueue_burst() to return completed packets.\n\nChange log\n==========\nv4:\n- support new API in vhost example\nv3:\n- fix incorrect ret value when DMA ring is full\n- enhance description of API declaration and programmer guide\nv2:\n- fix typo\n- rename API variables\n- update programmer guide\n\nJiayu Hu (2):\n vhost: cleanup async enqueue\n vhost: enhance async enqueue for small packets\n\n doc/guides/prog_guide/vhost_lib.rst | 8 +-\n examples/vhost/main.c | 18 ++-\n lib/librte_vhost/rte_vhost_async.h | 34 +++--\n lib/librte_vhost/vhost.c | 14 +-\n lib/librte_vhost/vhost.h | 7 +-\n lib/librte_vhost/vhost_user.c | 7 +-\n lib/librte_vhost/virtio_net.c | 258 ++++++++++++++++++++----------------\n 7 files changed, 200 insertions(+), 146 deletions(-)" }