From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-io0-f169.google.com (mail-io0-f169.google.com [209.85.223.169]) by dpdk.org (Postfix) with ESMTP id E0D749173 for ; Mon, 31 Jul 2017 09:42:21 +0200 (CEST) Received: by mail-io0-f169.google.com with SMTP id g13so107545888ioj.5 for ; Mon, 31 Jul 2017 00:42:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to; bh=jy88eZUIa6F05PbdyPBrUp9vKbJq1YjVKzFvhL2GA1o=; b=M5V8WSQKA3a2PPFrgsoqwbfVytiAH6ij9L52rV8DZfl2BlGOJypfzFmDNc1GlV9+a1 BVR+mdD/Wj+3PlEUcdENBVviPCBXJpY0QvZt/EonSKJaUoOfDf/kpOFqoOrOFNFrl/Ov 0lDn9Tj+TJgp7zI9kQE/aswP0fVt24wW+EjUJ375m1lxU2X60GQmB69e7F77WG7JNxZL 1Xa+jazFz3RX35uQ/jEjsMiyY+f3cw6t2ASmLFLu0Cgf4+eGxcMJFWWTz2ljYXaiMIYS HvMY/FJ9JMz6h+KeIQIcu+XXYCkjnUhJelDih65BnG+G/U18dMovPheddu0hQmY4hHGo cjOg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=jy88eZUIa6F05PbdyPBrUp9vKbJq1YjVKzFvhL2GA1o=; b=PHvcO0mWtnKJ20avAAvW7kbywcI5l7Jsq2+50ukK34+t05xHNkzp0EvyQw6VhMtjyv 1IhSZALa7I4ZsHCZvEipchMhaOIOq8xMrmJULguKi/ZQyX6Suwn2Ps4I/3LjQFB3WFf2 +F5dENP+Viwx2j8c1YXysOxXFAry+OBPc10E10SG6fRukT1kAnUWxqQVa2ZY5fD0BWMy H2l5wlcDFslXooTFNtWDW+cO8aRVnZI3BKpvMKWvqF0VtF0h+vKpaGp+WMK/TL4Be0Ik TUaPEC379BwVv+pwfjMhL/ho4rVu7X91yMlRk28m7P6dHYwLjn8uxFTIOl97pJA5U6Du TRFw== X-Gm-Message-State: AIVw112OydqcnoNhNrxbLH/QQwu16ELEHxQiUIJCNkKwzrhqpqZBA96Z cAya7qkfnhXmSKIi/oCcpRxNTYK6FtXo X-Received: by 10.107.200.196 with SMTP id y187mr19872715iof.67.1501486940910; Mon, 31 Jul 2017 00:42:20 -0700 (PDT) MIME-Version: 1.0 From: Yu Yang Date: Mon, 31 Jul 2017 07:42:10 +0000 Message-ID: To: "users@dpdk.org" Content-Type: text/plain; charset="UTF-8" X-Content-Filtered-By: Mailman/MimeDel 2.1.15 Subject: [dpdk-users] Performance degradation after the program running for awhile X-BeenThere: users@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK usage discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 31 Jul 2017 07:42:22 -0000 My program is a dns server implemented with run-to-completion model, when I start it with 11 cores, it has a normal performance(12M qps), but after 5-10 minutes, the qps decreased to 7M, I used Intel vTune Amplifier to analysis the process and found the top 2 hotspots is *ixgbe_recv_pkts_vec* and *rte_eth_rx_burst. * my test environments is: CPU: E5-2650(two sockets) memory: 64GB OS: ubuntu 16.04 64bits Any advices on how to solve this strange problem? thx