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 62EE6456E6; Mon, 29 Jul 2024 21:59:17 +0200 (CEST) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 40A2440A6D; Mon, 29 Jul 2024 21:59:17 +0200 (CEST) Received: from fout6-smtp.messagingengine.com (fout6-smtp.messagingengine.com [103.168.172.149]) by mails.dpdk.org (Postfix) with ESMTP id C8ABF40A6B for ; Mon, 29 Jul 2024 21:59:15 +0200 (CEST) Received: from compute2.internal (compute2.nyi.internal [10.202.2.46]) by mailfout.nyi.internal (Postfix) with ESMTP id 3E9BD1380288; Mon, 29 Jul 2024 15:59:15 -0400 (EDT) Received: from mailfrontend1 ([10.202.2.162]) by compute2.internal (MEProxy); Mon, 29 Jul 2024 15:59:15 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=monjalon.net; h= cc:cc:content-transfer-encoding:content-type:content-type:date :date:from:from:in-reply-to:in-reply-to:message-id:mime-version :references:reply-to:subject:subject:to:to; s=fm3; t=1722283155; x=1722369555; bh=2riewTBCzAGSUg1jPySBm++K0RyQx4f6WWBpfV6owYE=; b= CQerFjz1q0blj6s+U2SGES2Ak5G4MV3oj7qkjhp4kWdWpvDqJ6DhUq7fklRcvNqi Tvd824Yl0931T5IoNanBrfl3u2Y1iWGQDuzbx+s6wB/5lu9nLJExlLpNLovs8IXP LHGLWCDU0SxRhvDczKIh+laJXb/Sy2xjztBE8cfw363jUBRK8ONVEmLQ1Y0yiIzJ G/jOVXTtlfSmzN6QX9b2R3bvgQPJdA6lMYMy0xe89bMGLLTvlA1D+qgjj937/6tn pcmIiDbUsZB3zQmvxb5WOFrPV1jTDCVfTP06HfU11bhIW/lv/NeDINDDKr075abQ psuq4sniLCwwQraKagWADg== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:cc:content-transfer-encoding :content-type:content-type:date:date:feedback-id:feedback-id :from:from:in-reply-to:in-reply-to:message-id:mime-version :references:reply-to:subject:subject:to:to:x-me-proxy:x-me-proxy :x-me-sender:x-me-sender:x-sasl-enc; s=fm3; t=1722283155; x= 1722369555; bh=2riewTBCzAGSUg1jPySBm++K0RyQx4f6WWBpfV6owYE=; b=M CeyVUbnMDBDgYdoi4B+IrkTCDiw+xd35Oeiruc9e5riu4FQDcMWn1NmFadULkRdZ gA/Hbqz9b8IrIb2AuhU7T3kMMspDmonPZFK1hUxrFdr/K6CQJFx7NSBJAG1jBq/O pz3GSljlJ+ZCl04Edu0gcnowRczE/RF2s5t3zpGQ/2x52e8pkUwyh2Cz6wzZsOkb Gf0YzgeXIDMH1XVZ+wQqv12+h7vuxOq4xEWBFoQUY7MWoxgB2kUi4u0WFKEgUj+M NsyYL0DMwQtmFt9PUyC5kpy0420cOz5tv38smJm3j7cjvZ+X+C0TM7Wtex8lno5V vTv6FcHU/TquVUyAzezkA== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgeeftddrjedvgddugeeiucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmne cujfgurhephffvvefufffkjghfggfgtgesthfuredttddtjeenucfhrhhomhepvfhhohhm rghsucfoohhnjhgrlhhonhcuoehthhhomhgrshesmhhonhhjrghlohhnrdhnvghtqeenuc ggtffrrghtthgvrhhnpeejudevheeiveduuddtveffgfdtgeekueevjeffjeegtdeggeek gfdvuefgfeekjeenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepmhgrihhlfh hrohhmpehthhhomhgrshesmhhonhhjrghlohhnrdhnvghtpdhnsggprhgtphhtthhopedt X-ME-Proxy: Feedback-ID: i47234305:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA; Mon, 29 Jul 2024 15:59:14 -0400 (EDT) From: Thomas Monjalon To: Stephen Hemminger Cc: dev@dpdk.org Subject: Re: [PATCH 1/2] doc: add note about CPU 0 Date: Mon, 29 Jul 2024 21:59:11 +0200 Message-ID: <2868191.Y6S9NjorxK@thomas> In-Reply-To: <20240718184326.21375-1-stephen@networkplumber.org> References: <20240718184326.21375-1-stephen@networkplumber.org> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="utf-8" X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org 18/07/2024 20:43, Stephen Hemminger: > On Linux (and probably BSD), CPU 0 can not be fully isolated > because it receives timer interrupts and is used for other > kernel related functions. The DPDK documentation should > be updated to tell users to avoid polling on that CPU. > > Signed-off-by: Stephen Hemminger > --- > +.. note:: > + > + It is not recommended to use CPU core 0 for DPDK polling applications > + because it can not be isolated from other system and kernel activity. Indent should be 3 spaces. > For example, if a given CPU has 0-7 cores > -and DPDK applications are to run on logical cores 2, 4 and 6, > -the following should be added to the kernel parameter list: > +and DPDK applications are to run on logical cores 2, 4 and 6. > +The following should be added to the kernel parameter list: I think it was better as 1 sentence with the comma.