From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from vms173007pub.verizon.net (vms173007pub.verizon.net [206.46.173.7]) by yocto-www.yoctoproject.org (Postfix) with ESMTP id B27E2E00344 for ; Thu, 16 Aug 2012 19:22:16 -0700 (PDT) Received: from gandalf.denix.org ([unknown] [72.66.25.115]) by vms173007.mailsrvcs.net (Sun Java(tm) System Messaging Server 7u2-7.02 32bit (built Apr 16 2009)) with ESMTPA id <0M8V0032HNW6T140@vms173007.mailsrvcs.net> for meta-ti@yoctoproject.org; Thu, 16 Aug 2012 21:21:57 -0500 (CDT) Received: by gandalf.denix.org (Postfix, from userid 1000) id EF231201B8; Thu, 16 Aug 2012 22:21:41 -0400 (EDT) Date: Thu, 16 Aug 2012 22:21:41 -0400 From: Denys Dmytriyenko To: Cliff Brake Message-id: <20120817022141.GA14556@denix.org> References: MIME-version: 1.0 In-reply-to: User-Agent: Mutt/1.5.20 (2009-06-14) Cc: meta-ti@yoctoproject.org Subject: Re: io CPU usage high X-BeenThere: meta-ti@yoctoproject.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: Mailing list for the meta-ti layer List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 17 Aug 2012 02:22:16 -0000 Content-type: text/plain; charset=us-ascii Content-disposition: inline On Thu, Aug 16, 2012 at 06:11:59PM -0400, Cliff Brake wrote: > I've noticed with recent Angstrom images running on OMAP class CPUs, it > seems the IO CPU usage is very high when running from SD cards. When there > is a lot of disk activity, the system becomes fairly unresponsive, and CPU > io usage is usually pegged. Is this expected? I don't recall seeing this > with older kernels such as 2.6.39 which I'm using on an older project. Cliff, Do you use kernel-mainline_3.2 from meta-ti that is crafted for beagleboard or something else? Denys