similar to: DVFS, xenpm in 3.4.1 and linux 2.6.18

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

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

Currently cpufreq and xenpm are out of sync. Fix cpufreq reporting of if turbo mode is enabled or not. Fix xenpm to not decode for tristate, but a boolean. Signed-off-by: Jacob Shin <jacob.shin@amd.com> --- tools/misc/xenpm.c | 14 +++----------- xen/drivers/cpufreq/utility.c | 2 +- 2 files changed, 4 insertions(+), 12 deletions(-) diff --git a/tools/misc/xenpm.c

Currently, enable/disable turbo mode on AMD is broken: $ xenpm enable-turbo-mode 0 <-- works and proper CPU MSR bit is set $ xenpm enable-turbo-mode 1 <-- silently broken, MSR bit not set Since ->turbo is per policy, when user requests to enable/disable turbo mode, we need to set the bit in all of the ->cpus that this policy affects. --- xen/arch/x86/acpi/cpufreq/powernow.c | 2

Hello, I''ve tried to get the CPUFreq plugin of collectd running in dom0. But I mentioned that it isn''t so easy to get a file in sysfs on the rigth place. I know that the value has to come from hypervisor and I''ve seen the code in xenpm. The only value I need is "/sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq" which would create cpufreq.c. Can anyone

On Thu, Dec 18, 2014 at 8:13 PM, Vince Hsu <vinceh at nvidia.com> wrote: > Hello Ben, > > On 12/18/2014 05:34 PM, Ben Skeggs wrote: >> >> On Thu, Dec 18, 2014 at 4:28 PM, Vince Hsu <vinceh at nvidia.com> wrote: >>> >>> This patch creates a subdev for DVFS (Dynamic Voltage and Frequency >>> Scaling) >>> support in Nouveau. This

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

On Thu, Dec 18, 2014 at 4:28 PM, Vince Hsu <vinceh at nvidia.com> wrote: > This patch creates a subdev for DVFS (Dynamic Voltage and Frequency Scaling) > support in Nouveau. This subdev refers to the status information provided by > the NVIDIA hardware and tries to adjust the performance level based on the > calculated target. Only the GK20A is supported right now. Hey Vince,

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

Hi, Is there any documentation on enabling hypervisor support for both C and P-state control? On xen-unstable and linux-2.6.18-xen.hg, if I enable cpuidle=1 on the xen command line and then run xenpm, I will get output for C-states (shown below) but it complains that "Xen cpufreq is not enabled!" cpu id : 0 total C-states : 2 idle time(ms) : 73264 C0

Hi everyone, When I set CONFIG_ACPI_PROCESSOR, CONFIG_CPU_IDLE and CONFIG_INTEL_IDLE to y then I cannot boot Xen; there is a crash. If I turn CONFIG_INTEL_IDLE off then the boot goes well and, after dom0 has booted, xenpm works and gives some sane output, see below. I have tested this with kernels 3.2 to 3.4.6. Is it impossible to use INTEL_IDLE with Xen? If this is a known issue then maybe

Hi everyone, When I set CONFIG_ACPI_PROCESSOR, CONFIG_CPU_IDLE and CONFIG_INTEL_IDLE to y then I cannot boot Xen; there is a crash. If I turn CONFIG_INTEL_IDLE off then the boot goes well and, after dom0 has booted, xenpm works and gives some sane output, see below. I have tested this with kernels 3.2 to 3.4.6. Is it impossible to use INTEL_IDLE with Xen? If this is a known issue then maybe

Hi, This is a try to have some simple DVFS (Dynamic Voltage and Frequency Scaling) support for GK20A. Instead of relying on other existing frequency scaling framework, we create a simple subdev in Nouveau for the same purpose. That's because we don't want to make the DVFS implementation for GK20A far more than enough in the beginning and hinder the implementation for dGPU in the future.

Hello Ben, On 12/18/2014 05:34 PM, Ben Skeggs wrote: > On Thu, Dec 18, 2014 at 4:28 PM, Vince Hsu <vinceh at nvidia.com> wrote: >> This patch creates a subdev for DVFS (Dynamic Voltage and Frequency Scaling) >> support in Nouveau. This subdev refers to the status information provided by >> the NVIDIA hardware and tries to adjust the performance level based on the

On 12/18/2014 11:25 AM, Ben Skeggs wrote: > On Thu, Dec 18, 2014 at 8:13 PM, Vince Hsu <vinceh at nvidia.com> wrote: >> Hello Ben, >> >> On 12/18/2014 05:34 PM, Ben Skeggs wrote: >>> On Thu, Dec 18, 2014 at 4:28 PM, Vince Hsu <vinceh at nvidia.com> wrote: >>>> This patch creates a subdev for DVFS (Dynamic Voltage and Frequency >>>>

Hi, i''m not sure if i understood the new acpi xen cpufreq driver - here''s the output when loading xen_acpi_processor module in linux 3.4: dom0 dmesg: [ 32.728151] xen-acpi-processor: (CX): Hypervisor error (-22) for ACPI CPU8 [ 32.728156] xen-acpi-processor: (CX): Hypervisor error (-22) for ACPI CPU9 [ 32.728160] xen-acpi-processor: (CX): Hypervisor error (-22) for

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

Hi! Attached patch makes xen-tools and stubdom-dm going independent from hardcoded pathes. It is no possible to install into /usr/local or any other non-default directory and use it out-of-the box. This allows us to have different Xen versions in different directories, simplifies packaging for distributions. It also finds ''hvmloader'' and

- use consistent error values (stop mixing of [positive] errno values with literal -E... ones) - properly format output - don''t use leading zeros in decimal output - move printing of average frequency into P-state conditional (rather than a C-state one) - don''t print some C-state related info when CPU idle management is disabled in the hypervisor - use calloc() for array