From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from sender-pp-092.zoho.com (sender-pp-092.zoho.com [135.84.80.237]) by dpdk.org (Postfix) with ESMTP id 4B5A14CC3 for ; Tue, 28 Aug 2018 15:04:39 +0200 (CEST) ARC-Seal: i=1; a=rsa-sha256; t=1535461476; cv=none; d=zoho.com; s=zohoarc; b=iddnGGSsCQyujeyy9BPvckvqGf3eIC3Y47w1gc7Y2v2CebYhBz2LY3/YYYtFJJgmbN+Hd9Duf+W9+zmp7DHrJm/sw/va/cKEOCF5XJpG9pom5FzZ7SwwU7Afx3vskojGg/4jzq5jIf7yU72OJZXpqYsxDcOB2q3yPxJmBd9fnnA= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zoho.com; s=zohoarc; t=1535461476; h=Content-Type:Content-Transfer-Encoding:Date:From:MIME-Version:Message-ID:Subject:To:ARC-Authentication-Results; bh=LdPa3KKh4XgMAYfy/DZlRXUgIbVY8cCEx+tQd1RXHWQ=; b=AYEI2JhPr3iIgAr+Qm0pF+Rbf4Cam5W1Ep6gXvhHUOaLVUHVY9Plou/NiQpHwfPscWALA1wE1EFsdKpuhY3LADuCpRHUbQWV6MHHmtYMRORPsUYwZc0VWTyn8EXCqmb5eQxjyXG1uAWMTbIEprZ1NqJhMZOELwoDCTH7rbtjGQo= ARC-Authentication-Results: i=1; mx.zoho.com; dkim=pass header.i=zoho.com; spf=pass smtp.mailfrom=irsaber@zoho.com; dmarc=pass header.from= header.from= DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=zapps768; d=zoho.com; h=to:from:subject:message-id:date:user-agent:mime-version:content-type; b=oTPjAQpiDCKuJDSnO+nbI+LxPTO51qmtmYLMmPo10P5qIFUY5Plzot5WBGDrCG466EB6ZFDrQmoS HjfRT3Pu4Ktndsi76ESfWcU6jSYoIQd4IZa09fc8frO9swI5eS5H Received: from [192.168.1.8] (188.210.190.126 [188.210.190.126]) by mx.zohomail.com with SMTPS id 1535461472764946.586885251267; Tue, 28 Aug 2018 06:04:32 -0700 (PDT) To: dev@dpdk.org From: Saber Rezvani Message-ID: <74400e6a-91ba-3648-0980-47ceae1089a7@zoho.com> Date: Tue, 28 Aug 2018 17:34:27 +0430 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Content-Language: en-US X-ZohoMailClient: External Subject: [dpdk-dev] IXGBE throughput loss with 4+ cores 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: Tue, 28 Aug 2018 13:04:39 -0000 Hi, I have run multi_process/symmetric_mp example in DPDK example directory. For a one process its throughput is line rate but as I increase the number of cores I see decrease in throughput. For example, If the number of queues set to 4 and each queue assigns to a single core, then the throughput will be something about 9.4. if 8 queues, then throughput will be 8.5. I have read the following, but it was not convincing. http://mails.dpdk.org/archives/dev/2015-October/024960.html I am eagerly looking forward to hearing from you, all. Best wishes, Saber