From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ralf Schenk Subject: Re: Build XEN 3.2 with cpufreq Support Date: Sat, 19 Jan 2008 00:41:51 +0100 Message-ID: <4791393F.9070807@databay.de> References: <4790BA27.60504@databay.de> <1449F58C868D8D4E9C72945771150BDF02077216@SAUSEXMB1.amd.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: <1449F58C868D8D4E9C72945771150BDF02077216@SAUSEXMB1.amd.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: "Langsdorf, Mark" Cc: xen-devel@lists.xensource.com List-Id: xen-devel@lists.xenproject.org Langsdorf, Mark schrieb: >> Does anybody know how to build and use cpufreq support that=20 >> should be in 3.2 since -unstable time ? >=20 > Build dom0 with cpufreq support. Pass "cpufreq=3Ddom0-kernel" > on the Xen command line. ondemand support should work > automatically from there, or you can choose one of the > other governors. >=20 > -Mark Langsdorf > Operating System Research Center > AMD >=20 Thanks for your support, ondemand frequency is working in dom0 now (on M2NBP-VM CSM Mainboard and Athlon 64 X2 5000+ CPU). If I run cpu-intensive tasks (mprime) in a domU frequency switches to max 2.6Ghz. Thats great and a new feature - but I get these warnings in the syslog of= my domU that were reported anywhere on the mailinglist around October: Jan 19 00:11:09 server kernel: printk: 14 messages suppressed. Jan 19 00:11:09 server kernel: Timer ISR/0: Time went backwards: delta=3D-123862858 delta_cpu=3D-123862858 shadow=3D 2993571302800 off=3D705014593 processed=3D2994400167600 cpu_processed=3D2= 994400167600 Jan 19 00:11:09 server kernel: 0: 2994400167600 Jan 19 00:11:09 server kernel: 1: 2994213786880 Jan 19 00:11:09 server kernel: Timer ISR/1: Time went backwards: delta=3D-50043804 delta_cpu=3D136336916 shadow=3D29 93571302800 off=3D778821372 processed=3D2994400167600 cpu_processed=3D299= 4213786880 Jan 19 00:11:09 server kernel: 0: 2994400167600 Jan 19 00:11:09 server kernel: 1: 2994213786880 Jan 19 00:11:09 server kernel: Timer ISR/1: Time went backwards: delta=3D-70033718 delta_cpu=3D66347002 shadow=3D299 3571302800 off=3D838831281 processed=3D2994480167600 cpu_processed=3D2994= 343786880 Jan 19 00:11:09 server kernel: 0: 2994480167600 Jan 19 00:11:09 server kernel: 1: 2994343786880 This happens also if I switch manually with cpufreq-set -f 2.60GHz of cpufrequtils. I can't see any problems except the warnings... Bye --=20 __________________________________________________ Ralf Schenk fon (02 41) 9 91 21-0 fax (02 41) 9 91 21-59 rs@databay.de Databay AG H=FCttenstra=DFe 7 D-52068 Aachen www.databay.de Vorstand: Jens Conze, Ralf Schenk, Aresch Yavari Aufsichtsratvorsitzender: Ansgar V=F6geli Sitz/Amtsgericht Aachen HRB:8437 USt-IdNr.: DE 210844202 Databay - einfach machen. _________________________________________________ Diese E-Mail und etwa angeh=E4ngte Dateien enthalten vertrauliche Informationen und sind ausschlie=DFlich f=FCr den Adressaten bestimmt. Sollten Sie irrt=FCmlich diese E-Mail erhalten haben, bitten wir Sie, uns dar=FCber unter info@databay.de zu informieren und die E-Mail aus Ihrem System zu l=F6schen. This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify info@databay.de. If you are not the named recipient, you should return this message and delete it from your system.