similar to: How to disable power management in Xen-3.3?

Oh, thanks, Niraj. I overlooked this initially, because this code is not implemented in waldi 3.1-2 kernel, but only in 3.3-1. I''ll check it out tonight, as booting a new kernel per remote is a bit too dangerous. This would be exactly what I need. BR, Carsten. Von: Niraj Tolia Gesendet: Mit, 7.1.2009 22:53 An: Carsten Schiers Cc: jbeulich ; mark.langsdorf ; xen-devel Betreff:

I''ve a problem with managing power consumption on Intel Nehalem CPU. I''ve installed Xen 3.4 on our Dell PowerEdge T610 system on a Ubuntu 9.04 distribution. I recompiled the kernel 2.6.30rc5. Now I can see the c-states of the CPUs but no access to P-states information and the frequency scaling does not work. By the way, if I run the kernel 2.6.28.13 which is the last one

I do not seem to be able to get any where with the power management functions. I have had a look at the xenpm Wiki page, but it hasn''t helped. Its probably something completely obvious, but I can''t see it. I running Xen 3.4.0 on Centos 5.3 x86_64 using the gitco RPMs on an Intel S5000PSL motherboard with 2 x Xeon 5410s. Dom0 is running the latest Centos 5.3 kernel. My xm

Enable cpufreq support in Xen for AMD Operton processors by: 1) Allowing the PowerNow! driver in dom0 to write to the PowerNow! MSRs. 2) Adding the cpufreq notifier chain to time-xen.c in dom0. On a frequency change, a platform hypercall is performed to scale the frequency multiplier in the hypervisor. 3) Adding a platform hypercall to the hypervisor the scale the frequency multiplier and reset

BODY { font-family:Arial, Helvetica, sans-serif;font-size:12px; } Dear All, I was trying to set up a virtual network with fc7 Dom0 and ubuntu 8 (Hardy) & Fedora 9 (etc) as DomU images on AMD Opetron 152 processor based machine. I was able to successfuly establish a virtual network using bridge connection Xen Network configuration. After that I tried to install cpufreq-utils on Dom0 which

it seems getting lost, and thus resend. Thanks, Kevin -----Original Message----- From: Tian, Kevin Sent: 2008年7月24日 8:39 To: ''Jan Beulich'' Cc: Liu, Jinsong; Keir Fraser; xen-devel@lists.xensource.com; mark.langsdorf@amd.com Subject: RE: [Xen-devel] cpufreq info propagation >From: Jan Beulich >Sent: 2008年7月23日 18:13 >> >>startup info is viable. But how

I have xeons 5520 how do I configure xen 4.3 to lower cpu clocks ? cpufreq=dom0-kernel cpuidle I read power management under xen wiki but command xenpm set-scaling-governor ondeman Gives [CPU0] failed to set governor name (19 - No such device) [CPU1] failed to set governor name (19 - No such device) [CPU2] failed to set governor name (19 - No such device) [CPU3] failed to set governor name (19

Hello, I want to use DVFS in xen. I use Fedora 8. The server supports DVFS when it boots from Fedora 8 without xen. Then, I installed Xen 3.4 from source and boots successfully. But the cpufreq directory is gone in the system. I cannnot use DVFS. If I run xenpm get-cpufreq-xxx, it always reports "failed to get xxx". I have googled a lot, but still cannot find the solution. The CPU is

I am seeing random reboots after installing Xen 3.2.1 (running with linux-2.6.18-8 pulled from a few days ago). So far, the reboots only happen if I have enabled cpufreq=dom0-kernel and actually run frequency scaling (such as with the ondemand governor). The reboots only happen after a few hours. The machines seem to be stable if I pass the cpufreq option to Xen but disable frequency scaling. I

Enable THERM_CONTROL MSR write for dom0 even cpufreq=xen Signed-off-by: Wei Gang <gang.wei@intel.com> diff -r bd683e0397b4 xen/arch/x86/traps.c --- a/xen/arch/x86/traps.c Tue Feb 17 22:29:38 2009 +0800 +++ b/xen/arch/x86/traps.c Wed Feb 25 11:23:01 2009 +0800 @@ -2187,10 +2187,17 @@ static int emulate_privileged_op(struct case MSR_IA32_MPERF: case MSR_IA32_APERF:

Now that I finally got around to update our sources, I had a closer look at those changes, and apart from stylistic issues on the Linux side (part of which I may have asked for, but the result was somewhat overdone so the code is hardly legible now - I''ve got a patch queued to streamline this a little) I find it rather odd (fragile) that the who-is-in-charge information gets propagated

Hi, i read the xenpm wiki page, but i cannot use the "p-states". xenpm shows: xenpm cpu id : 0 total C-states : 2 idle time(ms) : 1776034 C0 : transition [00000000000000000000] residency [00000000000000000000 ms] C1 : transition [00000000000000260278] residency

Modify the cpufreq ondemand governor so that it can get idle and total nsecs from the Xen hypervisor.  Xen uses nsecs to measure idle time, while Linux uses ticks. Other than accounting for that difference, use the same algorithm to calculate idle time as Linux does. Signed-off-by: Mark Langsdorf <mark.langsdorf@amd.com> diff -r 26962454b508 drivers/cpufreq/cpufreq_ondemand.c ---

Thanks Anna, this was also quite interesting for me. Did you mean that I just have to eliminate the else branch or raise arround "All devices behind the uppermost PCI/PCI-X bridge must be co-assigned to the same guest." or do I have to eliminate more in order to prevent an FLR (whatever that is). For my board it''s definitely necessary to move PCI devices in different guests,

Hi All, Here is the test report for Xen-4.0.0-rc6(Xen C/S 21022). Our testing covers following features, like VT-x/VT-x2, VT-d, SR-IOV, Power Management, RAS, and TXT. There are 2 new RAS bugs exposed in this testing compared with RC5 testing. 2 bugs are fixed. VT-d/SR-IOV and TXT can work without major bug. Most bugs are in RAS side. Dom0 S3 cannot work on Gulftown-HEDT platform. We use latest

Does anyone know what is the latest version of dom0-kernel, that supports fully xenpm hypercalls? I tried from 3.0 to 3.3 with xen-4.1.3, but none of them has xenpm working. On the other hand native kernel cpufreq is OK with all of them. My CPU is Xeon family 6 on PowerEdge 1950 III box. Regards, Dimitar Kazakov

Does anyone know what is the latest version of dom0-kernel, that supports fully xenpm hypercalls? I tried from 3.0 to 3.3 with xen-4.1.3, but none of them has xenpm working. On the other hand native kernel cpufreq is OK with all of them. My CPU is Xeon family 6 on PowerEdge 1950 III box. Regards, Dimitar Kazakov

Hello, I am compiling xen 3.3.1 with linux 2.6.18.8 as domain 0. I am able to compile this successfully on a PAE enabled TOSHIBA machine (However having problems with loading graphics drivers but able to boot with runlevel 3). But since the graphics problem could be because of non standard hardware that comes with Toshiba laptop, I tried compiling the same on an IBM laptop . This system does not

.. snip.. >> Both of them (acpi-cpufreq.c and powernow-k8.c) have a symbol >> dependency on drivers/acpi/processor.c > > But them being ''m'' or ''y'' shouldn''t matter in the end. I thought you were saying it matters - as it should be done around the same time as cpufreq drivers were loaded? .. snip.. >> For a), this would mean some

Hi, I am trying to use the cpufreq driver and was unable to find the same on my xen kernel. I am currently running the folloing kernel: # uname -a Linux mbr-Dom0-3 2.6.18.8-xen #1 SMP Wed Jan 28 10:27:04 IST 2009 x86_64 x86_64 x86_64 GNU/Linux I read in certain places that some versions of Xen donot support cpufreq. But the information was not too clear. Could someone kindly tell me if cpufreq