From mboxrd@z Thu Jan 1 00:00:00 1970 From: "husainee" Subject: Random packet drops with ip_pipeline on R730. Date: Tue, 8 Sep 2015 10:25:34 +0530 Message-ID: <55EE6A46.6030507@nevisnetworks.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit To: dev@dpdk.org Return-path: Received: from mithiskyconnect.com (outb.mithiskyconnect.com [180.149.240.134]) by dpdk.org (Postfix) with ESMTP id 441808D96 for ; Tue, 8 Sep 2015 06:55:39 +0200 (CEST) Received: from mail9.mithiskyconnect.com (localhost.localdomain [127.0.0.1]) by mail9.mithiskyconnect.com (SMF) with ESMTP id 77FC2CA0444 for ; Tue, 8 Sep 2015 10:25:35 +0530 (IST) Received: from mail9.mithi.com (localhost.localdomain [127.0.0.1]) by mail9.mithiskyconnect.com (bulkSplit) with ESMTP id 6CCE3CA0443 for ; Tue, 8 Sep 2015 10:25:35 +0530 (IST) Received: from unknown (HELO localhost.localdomain) (husainee.plumber@nevisnetworks.com@[180.149.247.243]) (envelope-sender ) by 0 (qmail-ldap-1.03) with AES128-SHA encrypted SMTP for ; Tue, 8 Sep 2015 04:55:35 +0000 List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" Hi I am using a DELL730 with Dual socket. Processor in each socket is Intel(R) Xeon(R) CPU E5-2603 v3 @ 1.60GHz- 6Cores. The CPU layout has socket 0 with 0,2,4,6,8,10 cores and socket 1 with 1,3,5,7,9,11 cores. The NIC card is i350. The Cores 2-11 are isolated using isolcpus kernel parameter. We are running the ip_peipeline application with only Master, RX and TX threads (Flow and Route have been removed from cfg file). The threads are run as follows - Master on CPU core 2 - RX on CPU core 4 - TX on CPU core 6 64 byte packets are sent from ixia at different speeds, but we are seeing random packet drops. Same excercise is done on core 3,5,7 and results are same. We tried the l2fwd app and it works fine with no packet drops. Hugepages per 1024 x 2M per socket. Can anyone suggest what could be the reason for these random packet drops. regards husainee