From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pavel Machek Subject: Re: [discuss] Re: [PATCH] Allow all Opteron processors to change pstate at same time Date: Thu, 13 Jul 2006 13:06:05 +0000 Message-ID: <20060713130604.GC8230@ucw.cz> References: Mime-Version: 1.0 Return-path: Content-Disposition: inline In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org List-Id: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: "shin, jacob" Cc: "Deguara, Joachim" , Andi Kleen , "Langsdorf, Mark" , discuss@x86-64.org, linux-kernel@vger.kernel.org, cpufreq@lists.linux.org.uk Hi! > > Here are the further findings after letting the machine toggle between > > 1GHz and 2.2Ghz every two seconds for roughly 24 hours. Unfortunately > > there is an oops after bringing CPU2 online and CPU3 will not come > > online. Still the differences in TSC are not bad: > > Can I get more information on how to reproduce the Oops? Kernel version? > .config? your hardware? > > I have run basic set of CPU Hotplug on/offline tests, and I could not > reproduce it.. Can you run two such tests *in parallel*? That seemed to break it really quickly. Pavel -- Thanks for all the (sleeping) penguins.