similar to: How to configure cpu frequency of guest

My resource: kernel: 4.16.8 host system: Ubuntu 16.04 Llbvirt : 4.2 Qemu : 2.12 Cpu : intel@core i7 6700 guest system: windows7 professional My problem: In my host, Cpu frequency is 3800~3900 MHz(4 socket and 2 thread) because i turn on “Intel Turbo Boost”. And silent frequency is 3.40 GHz. Then i boot my guest, But in Guest my cpu frequency is 3408

On Fri, May 18, 2018 at 10:08:38AM +0800, Allence wrote: > My resource: > kernel: 4.16.8 > host system: Ubuntu 16.04 > Llbvirt : 4.2 > Qemu : 2.12 > Cpu : intel@core i7 6700 > guest system: windows7 professional > > > My problem: > In my host, Cpu frequency is 3800~3900 MHz(4 socket and 2 thread) > because i turn on

I noticed that cpu MHz in /proc/cpuinfo is wrong: processor : 0 vendor_id : GenuineIntel cpu family : 15 model : 4 model name : Genuine Intel(R) CPU 3.80GHz stepping : 6 cpu MHz : 948.218 cache size : 2048 KB fpu : yes fpu_exception : yes Dmesg also says: PID hash table entries: 2048 (order: 11, 65536 bytes)

Hello, Using kernel: 2.6.18-92.1.13.el5.centos.plus the cpu throttling works as desired (see 2 traces below) ------------- trace snips -------------- dmesg | grep -i pow ACPI: SSDT (v001 PTLTD POWERNOW 0x00000001 LTP 0x00000001) @ 0x3fff9b40 powernow-k8: Found 1 AMD Athlon(tm) 64 X2 Dual Core Processor 4600+ processors ( 2 cpu cores) (version 2.20.00) powernow-k8: 0 :

I've been playing and comparing frequency scaling between AMD and Intel CPUs yesterday and there seem to be great differences between AMD and Intel and some gotchas. This is all on CentOS 5.2 with latest Xen kernels (which are supposed to be powersaving-enabled since 5.2). AMD: It seems once I get the AMD CPU to use the ondemand governor it works very well and very efficiently. But this

Hello, I am facing an issue where the detected CPU frequencies in KVM guests are incorrect. I am using the new Core i9 7900x with base clock 3.3GHz with "host-passthrough". Both Win10 and Linux guests incorrectly detect 3.45GHz for some reason. The workaround I have found is to temporarily switch to use HPET clocksource in the HOST before starting the VM. This makes the VMs correctly

Hey folks, I''ve encountered a rather interesting/frustrating issue with RHEL6 domU''s and live migration. I have no problems booting a RHEL6 domU using its stock/native kernel on Xen 3.4.1 or Xen 3.4.3. But in terms of live migration, there seems to be a problem when moving from a higher (in terms of CPU MHz) to lower (MHz) system -- even if the higher of the two is a much

Is it possible to set the CPU frequency exposed to the guest operating system for a kvm-enabled virtual machine ? The documentation does not mention anything about it. Thanks.

Hi, This has been a problem since the xen-acpi-processor code was added to the kernel source. I wasn''t sure if the problem I was seeing was related to the old version (4.1.2) of Xen that I was using but now I''m on 4.2.0 and it still exists I thought I would check if I have a misconfiguration or if I have discovered a problem. My system is a dual AMD Opteron(tm) Processor

What could be the reason for /sys/devices/system/cpu/cpu0/cpufreq non-existing? The cpu supports EIST. My guess is this may not be available because of cpu power/performance settings in the BIOS, but I can't take down production machines to play with this. Any ideas? The HW is Dell PER 5xx/7xx series. # cpupower frequency-info analyzing CPU 0: no or unknown cpufreq driver is active on

Does Xen provide support for CPU frequency scaling? If there exists such support, from which version they support it? Otherwise what problems do exist in support frequency scaling in Xen? Thanks, This message posted from opensolaris.org

PowerEdge 2850 with PERC SCSI RAID controller. 16GB RAM Dual Intel(R) Xeon(TM) CPU 3.00GHz Using megaraid driver and xfs on 3x 300GB SCSI disks as /dev/sdb (total 572GB) (RAID-5) Stock Centos 6.4 x64, everything updated. Kernel : 2.6.32-358.2.1.el6.x86_64 #1 SMP My Load always shows : top - 10:30:21 up 23:09, 1 users, load average: 0.99, 0.96, 0.79 yet there is no services what-so-ever

Hi I have a few questions regarding CPU frequency scaling in xen.. 1) Is CPU frequency scaling allowed in xen? especially in xen3.1 ? 2) If no, what are the reasons for not allowing ? 3) If yes, why is it disabled? And how to enable it ? 4) I think there are some patches available for providing this support. Are there any reasons for not including this patches in official release of xen?

Hi, Does Xen provide support for CPU frequency scaling? If there exists such support, from which version they support it? Otherwise what problems do exist in support frequency scaling in Xen? Thanks, Vahid _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel

Hi, I'm running CentOS 5.5 (on ThinkPad x61). I use KVM to run a SLES 11.0 (32bits, kernel 2.6.27.19-5-pae) guest. The "cat /proc/cpuinfo" got the result: processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 6 model name : QEMU Virtual CPU version 0.9.1 stepping : 3 cpu MHz : 0.000 cache size : 32 KB fdiv_bug : no

Hi, I''ve recently installed xen-3.2.1 on my AMD Sempron(tm) machine. It runs gentoo 2.6.21 as dom0 and cpu frequency scaling works in dom0. But inside a domU, cpu frequency scaling is not working. By checking the boot log in domU I found that domU is unable to load the powernow driver: "powernow-k8: BIOS error - no PSB or ACPI _PSS objects" I wonder if it is possible to have

Hello everybody, I have a bunch of strings like this: "IBM POWER4+ 1.9GHz" "IBM RS64-III 500MHz" "IBM RS64-IV 600 MHz" "IBM RS64 IV 750MHz" "Intel Itanium 2 Processor 6M 1.5GHz" "Intel Itanium2 1 Ghz" "Intel Itanium2 1.5GHz" "Intel

hi , I am creating Guest by Libvirt tool " virt-install" with cpu model as host. After Guest creation i see Guest Missing quite no of flags which Host was having . What could be the reason for this ? I am expecting all flags of Host to e present in Guest as well when choosing cpu model as host . Guest : processor : 19 vendor_id : GenuineIntel cpu family : 6 model

i see this message in the dmesg , any one know this problem and the soliontion ??? Losing some ticks... checking if CPU frequency changed. thaks Jos? P?rez

So i downloaded mu online (well a private server) and when i run it my screen turns black and shows in the middle sumnt like a box in wich is written: Not in the diapasone 81.3/60 ghz Im usind Flatron L1752S i guess and wine version 1.0.1