From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-vb0-x233.google.com (mail-vb0-x233.google.com [IPv6:2607:f8b0:400c:c02::233]) by dpdk.org (Postfix) with ESMTP id 47E5A232 for ; Thu, 20 Jun 2013 13:20:24 +0200 (CEST) Received: by mail-vb0-f51.google.com with SMTP id x17so4570677vbf.10 for ; Thu, 20 Jun 2013 04:20:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:date:x-google-sender-auth:message-id:subject :from:to:content-type; bh=yxQwkLeG9CiNxygg2wMqAkaesw5RA+ljL7+bfJ48FrA=; b=S2QIGpWnNADsEo/O5YWcD/l7MDOw3ZhTXFS8aDWsxmQ3eIPjTkB3l26U2i/y7XiksJ 87PGQkaJq/OqAe8v8x3dIp4xRH6iudJajEl95jl9gfaX/ERIfhXA6+NgYmsToZxdoMmd upNJSre0UP5wn4YDAWLatbGrbomsXbndZ3gRb9wdE/ciVxwOwwUU8T0sKWYl2TamtWVN zsyzT3ADdfh+JbjvgabzzuB0iF0bogbIYGkg3ey7FUVXwfKQZdEW1A/7RYtcTbFlVIs9 9pX7sgnDrWkgCg3vS224sVD07rpfWLxWunfJls1Qiu/izri99wGI/eRqYUstAVazpXHB viFA== MIME-Version: 1.0 X-Received: by 10.58.255.229 with SMTP id at5mr2748056ved.44.1371727235744; Thu, 20 Jun 2013 04:20:35 -0700 (PDT) Sender: ali.wcct@gmail.com Received: by 10.52.37.113 with HTTP; Thu, 20 Jun 2013 04:20:35 -0700 (PDT) Date: Thu, 20 Jun 2013 16:20:35 +0500 X-Google-Sender-Auth: AbU6RFhubJfO3TJlT4m14iWOV7k Message-ID: From: Muhammad Ali To: dev@dpdk.org Content-Type: multipart/alternative; boundary=047d7bea39509d8b4104df9422ef Subject: [dpdk-dev] Number of memory channels (EAL Options) X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 20 Jun 2013 11:20:24 -0000 --047d7bea39509d8b4104df9422ef Content-Type: text/plain; charset=ISO-8859-1 Hi everyone I am running DPDK sample application compiled in Fedora 14 environment. I have used following command to run the App ./ -c f -n 4 c= bitmask of cores to to be used. and n= number of memory channels Now what does 'n' actually defines ?. Is this the number of DMA channels between RAM (hugepages) and NIC. ? If not so then what it is ? How does number of memory channels will effect the performance ? BTW I am using hugepagesize=1G and Number of Hugepages=4 My question might be very basic, but I am totally confused. Please help me out here. Thank you Regards -- Muhammad Ali --047d7bea39509d8b4104df9422ef Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable
Hi everyone

I am running = DPDK sample application compiled in Fedora 14 environment.

I have used following command to run the App

./<appl= ication> -c f -n 4

c=3D bitmask of cores to to be used.
and
<= /div>
n=3D number of memory channels

Now what does &#= 39;n' actually defines ?. Is this the number of DMA channels between RA= M (hugepages) and NIC. ? If not so then what it is ?

How does number of memory channels will effect the performan= ce ?

BTW I am using hugepag= esize=3D1G
and Number of= Hugepages=3D4

My question might be very basic, but I am totally confused= . Please help me out here.

Thank you

Regards
--
Muhammad Ali

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