From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 226E2A0C43 for ; Fri, 17 Sep 2021 18:22:15 +0200 (CEST) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id AAC12410EC; Fri, 17 Sep 2021 18:22:14 +0200 (CEST) Received: from mout.gmx.com (mout.gmx.com [74.208.4.201]) by mails.dpdk.org (Postfix) with ESMTP id 3F3B8410E9 for ; Fri, 17 Sep 2021 18:22:13 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=mail.com; s=dbd5af2cbaf7; t=1631895731; bh=NWvvskWrNK9+3momrDjLH+vvV1ZFcmZd/XvIi6pcxXw=; h=X-UI-Sender-Class:From:To:Cc:Subject:Date:In-Reply-To:References; b=5oHhkjoKgKwIDyqxkdyUL6QeTJkrLeLzsJt2dfSAhIiKmx774Sv+oyxw8gMSXTfsw 30mMsIRmmCzWjIhd6aSDgv+Yb2y1kZIs3Dtnxzs8dGTDaKLPiW1q+3Rv9MVk2Oo1IU LwH0QJnUsVlYCzyu/FtZMLmxFNc6MYYYDdQsd7YY= X-UI-Sender-Class: 214d933f-fd2f-45c7-a636-f5d79ae31a79 Received: from [88.113.133.8] ([88.113.133.8]) by web-mail.mail.com (3c-app-mailcom-lxa11.server.lan [10.76.45.12]) (via HTTP); Fri, 17 Sep 2021 18:22:11 +0200 MIME-Version: 1.0 Message-ID: From: Jared Brown To: Stephen Hemminger Cc: users@dpdk.org Content-Type: text/plain; charset=UTF-8 Date: Fri, 17 Sep 2021 18:22:11 +0200 Importance: normal Sensitivity: Normal In-Reply-To: <20210917085158.407f7bd4@hermes.local> References: <20210917085158.407f7bd4@hermes.local> X-UI-Message-Type: mail X-Priority: 3 X-Provags-ID: V03:K1:eUehpES7L5JL9jjzrW3U7zn5nr/+ZLMvDSbCS3FpG7XSXdnGa1dsSXV1r3vAjyhfWrQr2 BFh0TR8moq8S4Qc8Sw0W9Cl3ON8VoTVOFlUwAagfYeb19Yco5OWzarGyHqyoHIcjTxUqjGR1iPJS YmMv5VktnlWoac/X/lhXHFwVwn/CknHgFp+fcbO311IEtt8EXeXjaZBtdNRo3Fen4NdXtMkCskUh J7OgLf1p2Wx8Ck5m9X/0aOQhr9wcwYbcjhesBDSCE1Hw82ERnQqXQ+TlOL/rQf+04tZIY5MeDNpO +U= X-Spam-Flag: NO X-UI-Out-Filterresults: notjunk:1;V03:K0:pDx4a2f70Pk=:3lhUgOiX3ztQz0mFkipk5U QCEz5RSW+kWJMJh6RxEeo5FOCzcUUZnkruMSkbczwYl+4F8fmg0RVfQxlOSkPjSkOjjYbka7a J7qzNcNz70p9Nqfb6d4iWP6t/6ZkkYT12jzlONW7+2rlR0YE5c9X6YsAQm/UPlVrPJpyN8GKZ /P14MJ6OcFwzgYAEfhJW9IUquRlQYNHbD5VC2Hk0qFeSgYZ8ztfJZsNOCD3P6RcmkQ3VQPiQy WaNWJzLob8yIWLPhNc/s1JS6zr0RJ91PVCXfAmo9pZMtbuyuBAPZGzvQV0nBUQPibMMfXJWs/ la3+Q7pclKmxy6VjEE1kn5nOfoNXbNoTzW/+Zt6Zkh7fWkjgZmURHKWEljWp9DHaWtbB5IAq0 hiH46EcZHjNjrob1f6jz314Vurhnc3N+qfyfiVwSz2FokMhvmVWDCZJgvxpaNFxvvTR/zi+Ub iPnatxu3tcmLvamZd8ieHRZR/mVDsIl1qJXvLK8RG+7HnkIIr8FU8mXPkaL0XJliXc3xooeo6 ar85krilmcAPEaGrsJ8De1RSLES+Ws+oL2rA5okI/7pyOH7Wudd74Pas/r1oDIkfVzuA+mCXG MemJ2L+Dr0II2ZSrP2TEeEYrXK/XQrZZJXN8TaiHMOiBJjUuDqOZJVKzjGdPLnTUVZu5oqoEf x6FUVwfQ6ZjF8frZIidnpoyJiRdPXOJvcvxJ8gveb+Kc6evhv+J0rk7Zv7pTmGeS0Rj7XsCEB kTCCEXOF8LjmlFUZ+WXE4c+BBmljtCKjK5Vxm0IHgi9TnXzjz2HOIHf5FWE5s1qwCRuHi4mjn MZGBxru Content-Transfer-Encoding: quoted-printable Subject: Re: [dpdk-users] DPDK CPU selection criteria? X-BeenThere: users@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK usage discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: users-bounces@dpdk.org Sender: "users" > Intentionally, in fact any reference to any one CPU vendor should be rem= oved from website and documentaton. I get where this is coming from, but all the same it is not very useful = to the end user, given that the title of the document is "7. How to get be= st performance with NICs on Intel platforms". One would expect some accura= te and actionable advice on how to get the best performance. > Also any performance is application dependent. If you have an applicatio= n that > is very well tuned then some of this matters, for other applications whi= ch have > other issues (syscalls, locks, huge cache footprint) none of this matter= s. Obviously performance is application dependent, but all things being equ= al one would with good reason expect the underlying hardware to affect the= performance. If it does not, why are magnitudes of difference being repor= ted on per core Mpps performance? What I am trying to find out is, which factors *do* matter. Is there really no data or experience based knowledge about hardware for= warding performance out there, or is everybody supposed to find out things= by trial and error? - Jared