From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wr0-f196.google.com (mail-wr0-f196.google.com [209.85.128.196]) by dpdk.org (Postfix) with ESMTP id 78F1D1B1E7 for ; Wed, 10 Jan 2018 15:25:25 +0100 (CET) Received: by mail-wr0-f196.google.com with SMTP id g21so11710542wrb.13 for ; Wed, 10 Jan 2018 06:25:25 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=6wind-com.20150623.gappssmtp.com; s=20150623; h=subject:to:cc:references:from:organization:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=QaE1v33YCTsxgMp/k1txJPDIILNxzFRGhsUsGe1J0CU=; b=pOdLUVTcLrwr3YLwPCTBqMcvG6g7NYtew5IeOPye1iaxNBUJKu8tV5rSTCyx0zpuYb h71gXGzB8JDQGQD+ePj6AENRha1h7FlB/F7xA/aoxHiTJHra4vDtzzgyJBi59+0oZ3+U z2PtB2CSopPDRQF1uHv79n6yqcr7FpPUJCHy9trIjyC9Q/iMM+VXab33br8Ybl61VjUX 5kvOBEmoECKz11PVFExAMpJaZnYxbA6NZlQmw5qyDdL0n6C3jMv7Qg/2v0S1NNC6Znw2 hhoC8J0KF5ePh1wV2W1VynIX9DSQ9Z4vHj4DdxM67+27vy1QrQB0B42XG0/MGPN1RkpQ 0ezw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:organization :message-id:date:user-agent:mime-version:in-reply-to :content-language:content-transfer-encoding; bh=QaE1v33YCTsxgMp/k1txJPDIILNxzFRGhsUsGe1J0CU=; b=aXCfmX5lp12vQqKNGobKUFFz1lURGNDcNLYZv9JDj5ZELzV8PFGGWCVZvUWsVfdiYP VFEk/ocDcmUU+BLOb2XvSPcK6bpmkhWkjUg5UEwF/6l23RKjGIwczk5YHETjHyRthCdI 5/UvUzKs5U5lWYsdab2X5P88jRPs8fWnKrQNtzYuFCKCaJ82vjP+kyJy+3FLhqdJD5mF HC0HKvDWkxJLiIBzbCFUKiLJFTLhQLa9FIuVz5glDOtfXsmvepgDIrpyMSUfh/hw3bw+ gPaHnZbwXL3e/AmNaA81c136fNZGN/RrEm4R2lU+qWuzNZtAk785O2JKAF7AdwsOylqp NA5Q== X-Gm-Message-State: AKwxytdr9Jt4A2nUa3Td3aDxsh6Fv5HA/duWXHT52kUZDXvjJmz1UOvs E4lhtsDeYCAF2J7EDhHGlfL3Og== X-Google-Smtp-Source: ACJfBou71aWzocZpa42+vCC+aqKYD4+ZnKLhFJ8AZvp3WHcrQm+RNduh5AGcFZT/XGJZurUp98JKjQ== X-Received: by 10.223.161.208 with SMTP id v16mr684738wrv.190.1515594325108; Wed, 10 Jan 2018 06:25:25 -0800 (PST) Received: from [192.168.192.200] (host.78.145.23.62.rev.coltfrance.com. [62.23.145.78]) by smtp.gmail.com with ESMTPSA id 2sm16402648wrg.13.2018.01.10.06.25.24 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 10 Jan 2018 06:25:24 -0800 (PST) To: "Richardson, Bruce" Cc: John Fastabend , "Zhang, Qi Z" , "Xing, Beilei" , "dev@dpdk.org" , "Zhang, Helin" , "Yigit, Ferruh" References: <20171123165314.168786-1-bruce.richardson@intel.com> <20180109143254.234428-1-bruce.richardson@intel.com> <59AF69C657FD0841A61C55336867B5B0722203E8@IRSMSX103.ger.corp.intel.com> From: Vincent JARDIN Organization: www.6wind.com Message-ID: Date: Wed, 10 Jan 2018 15:25:23 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.5.0 MIME-Version: 1.0 In-Reply-To: <59AF69C657FD0841A61C55336867B5B0722203E8@IRSMSX103.ger.corp.intel.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit Subject: Re: [dpdk-dev] [PATCH v2 0/2] AVX2 Vectorized Rx/Tx functions for i40e 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: Wed, 10 Jan 2018 14:25:25 -0000 Le 10/01/2018 à 10:27, Richardson, Bruce a écrit : >> Hi Bruce, >> >> Just curious, can you provide some hints on percent increase in at least >> some representative cases? I'm just trying to get a sense of if this is >> %5, 10%, 20%, more... I know mileage will vary depending on system, setup, >> configuration, etc. >> > Best case conditions to test under are using testpmd as that is where any IO improvement will be most seen. As a ballpark figure though, on my system while testing testpmd with both 16B and 32B descriptors, (RX/TX ring sizes 1024/512) I saw ~15% performance increase, and sometimes quite a bit higher, e.g. when testing with 16B descriptors with larger burst sizes. Hi Bruce, Then, about the next limit after this performance increase: is it the board/Mpps capacity/PCI bus? If so, you should see that CPU usage on testpmd's cores to be decreased. Can you be more explicit about it? What's about other packet size like 66 bytes? 122 bytes? which are not aligned on 64 bytes. Thank you, Vincent