From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pl1-f171.google.com (mail-pl1-f171.google.com [209.85.214.171]) by dpdk.org (Postfix) with ESMTP id 2061F1B139 for ; Thu, 20 Sep 2018 20:11:04 +0200 (CEST) Received: by mail-pl1-f171.google.com with SMTP id ba4-v6so4709125plb.11 for ; Thu, 20 Sep 2018 11:11:04 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=networkplumber-org.20150623.gappssmtp.com; s=20150623; h=date:from:to:subject:message-id:mime-version :content-transfer-encoding; bh=20lo/glUyBz92jACXGmn0laiURR0Dbl8AK7LburGyhM=; b=1/xgoOIqD+Rxefv41IhNLh5aBjXRWNNCzApWmO8oDYmNcgCEx0jYUhvQJlP92xW9QU jNQBmSXgxaVe6FRU39kqAG/TLMuCXSWNiP8LBtTCGFkAP9xjUs4RV4XGXmbCBtWAAHzN iwSeRMcPGYgU0af04m3HF1dUumzJHb0/NoxDIbfkLeDy+PVuYHlKquqz0WKZyen3bK4P qQC1nTxZmyarMwl8S99LhQ6wYzYTZ666HGOCdVZQUJFbGq+lO/enZFEWYWL3M6pUeDu+ VlxF8D0ekHaJSKWpMPwVtzhJt3hS2QoJoFQxFk+Mtv1vv9UvCTgRBfc4iwrg1TqkhyBa gsqA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:subject:message-id:mime-version :content-transfer-encoding; bh=20lo/glUyBz92jACXGmn0laiURR0Dbl8AK7LburGyhM=; b=mPaDpjqmnQMslUIRqpSuzxM40TRtQRysRPPiceI+Ov6fjNRym4Z+IUoGhzneIwG92X qCo8feTAz0JfKmVGpMlDBnbQ1D1FBgNn2bIMfVyHuhXx5pv4vsAKpa/VYEajyIdyoUQ5 +J2IMleJyrmd28O0YkNEX8XYvPZ8SUz3xK1q67S9Rz22aC3xR3mXB+SxbLGFEImxc2rs 2o6Vk2gQ7IysT12W9OvG7l2nOxVRvm3UqSZviwuk7MHSfn4KZj3xTvJHyJ2r0H39qyJ8 8gYsl7A5l/oV34RqMaY8SlQIaPM5BDW83eXDtWReUWp9UzFAbbS1WhCe5wlMkJva1FBV 4DVQ== X-Gm-Message-State: APzg51BvbfaHNp0qNBXeD1T/YOFd/VDstj2obB3MJO5AcxRLiTWBp+9g Wp1ep1Ljjx6iwGA8bR9H/R8vTuNoPNg= X-Google-Smtp-Source: ANB0VdZW8POW0+xV6m+1gJlLIDQiB7fLPezLbD8e7OFaWRJgZ8CxKKfVLzLRaIJqvdSqh/KvbhSGng== X-Received: by 2002:a17:902:c6b:: with SMTP id 98-v6mr40753351pls.233.1537467062909; Thu, 20 Sep 2018 11:11:02 -0700 (PDT) Received: from xeon-e3 (204-195-22-127.wavecable.com. [204.195.22.127]) by smtp.gmail.com with ESMTPSA id u25-v6sm34206176pfk.177.2018.09.20.11.11.02 for (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Thu, 20 Sep 2018 11:11:02 -0700 (PDT) Date: Thu, 20 Sep 2018 11:10:55 -0700 From: Stephen Hemminger To: dev@dpdk.org Message-ID: <20180920111055.54d32242@xeon-e3> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Subject: [dpdk-dev] KNI performance is not what is claimed X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 20 Sep 2018 18:11:04 -0000 I wonder if KNI is claiming performance that was never measured on current CPU, OS, DPDK. With single stream and TCP testing on IXGBE (DPDK), I see lowest performance with KNI. Rx Tx KNI 3.2 Gbit/sec 1.3 Gbit/sec TAP 4.9 4.7 Virtio 5.6 8.6 Perhaps for 18.11 we should change documentation to remove language claiming better performance with KNI, and then plan for future deprecation?