From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qg0-f47.google.com (mail-qg0-f47.google.com [209.85.192.47]) by yocto-www.yoctoproject.org (Postfix) with ESMTP id 95BAEE00AEC for ; Mon, 24 Mar 2014 10:05:19 -0700 (PDT) Received: by mail-qg0-f47.google.com with SMTP id 63so17447025qgz.6 for ; Mon, 24 Mar 2014 10:05:18 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=message-id:date:from:user-agent:mime-version:to:subject:references :in-reply-to:content-type:content-transfer-encoding; bh=cSzTllSl5YAiPBRY5QFP8v6rasC8cyx5ZGjBJThLs4c=; b=rm7n51J0jwreDW5HE1Oqq4xR+m22i5OLJ2XICg7HxEGD7H/QM1fqC4MlEYR0So7mJe qkqzd1VKRsCbY37FnBVfvgAJTSxTWYjX6HMOw/NcI/xTwT3MAiez403Dg83KYYZCL4C5 /kuvvLyF8VeGIN6bu6KQ0BhuTOXjNhSzVGwYb1fXeJKaJW8hd/ea5J3rECqIZPtLh8WF +V6Q+GTki6n9ZkClLbTANcMEeh0SbY09WblSsxHBq726Zs82MD9Xu7HKrHlnYeU0R+EB 9Veim81nqYG1JEcaztWrfuO9cAjgjQsFnG1iOj1uR2D9d5rcvHzU1LR7fM4UCre7tO8Z itIg== X-Received: by 10.140.40.37 with SMTP id w34mr2734244qgw.112.1395680718679; Mon, 24 Mar 2014 10:05:18 -0700 (PDT) Received: from goober-2.local ([75.76.197.2]) by mx.google.com with ESMTPSA id t5sm22393045qge.0.2014.03.24.10.05.17 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Mon, 24 Mar 2014 10:05:18 -0700 (PDT) Message-ID: <53306587.6000307@gmail.com> Date: Mon, 24 Mar 2014 12:04:07 -0500 From: John Weber User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9; rv:24.0) Gecko/20100101 Thunderbird/24.4.0 MIME-Version: 1.0 To: meta-freescale@yoctoproject.org References: In-Reply-To: Subject: Re: linux-imx-3.10.9 with preempt-rt patch X-BeenThere: meta-freescale@yoctoproject.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: Usage and development list for the meta-fsl-* layers List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 24 Mar 2014 17:05:21 -0000 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit On 3/24/14, 11:52 AM, Fabio Estevam wrote: > Hi Jacob/Otavio, > > On Mon, Mar 24, 2014 at 1:48 PM, Jacob Kroon wrote: > >> I have done some testing using various tools from "rt-tests" package. >> The patch does show a big improvement when looking at the numbers from >> "cyclictest", max. peak of ~150 us in wakeup-latency for a high-priority >> realtime thread (compared to milliseconds even with a PREEMPT kernel), while >> loading the system in all the possible ways I could think of, >> including utilizing the GPU. This was on a Wandboard Solo. > What about creating a recipe for rt kernels, so that folks interested > in real-time kernel could easily test it under meta-fsl-arm? +1 to this. It would be great to have for all boards, not just Wandboard. But, I'm willing to test it on Wandboard as well. > > Regards, > > Fabio Estevam