similar to: cpu frequency

Hello, Is there a way to configure the domain cpu in such a way that the info reported to the guest OS system will remain constant ? For example in older versions of of libvirt/qemu the cpu was reported as "QEMU Virtual CPU version (cpu64_rhel6)" but moving the vm on a qemu2.2.0 is is reported as "QEMU Virtual CPU version 2.2.0". Thanks.

On 4/13/2015 1:18 PM, Kashyap Chamarthy wrote: > On Mon, Apr 13, 2015 at 12:14:12PM +0530, Jatin Davey wrote: >> Hi All >> >> I am new to KVM world. I have been using VMware for about a year. >> >> In VMware world we can reserve cpu resources for a VM. Say for instance if >> we need 4 vCPUs with a total of 8000 GHz then we can mention this >>

I want to create a virtual machine from scratch in ESX but I can't figure out how to create the disks - the vmdk files. Any hints on how that can be done or even if it's possible at all ? Thanks

Hi all: I have an Ubuntu 18.04 system. What is the easiest way to run all of my virtual machines with a low priority? Say a "nice" level of 15. I just do not want my virtual machines to have too much of an impact in any other processes on the system. Thanks in advance, rdiez

Hi, How do Hard limit a CPU allowance to 25% of a single core in KVM? Regards, Shashwat Shagun

Hi , I was previously using xen and currently moved to KVM. I am using libvirt to manage these VMs. In den's credit scheduler , I had the ability to set a cap on the cpu usage for a VM. But I was not able to find a similar substitute in KVM. I find that we can use cgroups to provide shares for VM but that will be more like weight based and it doesn't set a hard cap for that VM. I tried

>> I have an Ubuntu 18.04 system. What is the easiest way to run all of my virtual machines with a low priority? Say a "nice" level of 15. > > You can use the <vcpusched> (and related elements) to control > the schedular nice level up or down > > https://libvirt.org/formatdomain.html#elementsCPUTuning Thanks for your quick answer. I took at look at

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

you can set the CPU type and model and features https://libvirt.org/formatdomain.html I usually give it during the virt-install as -cpu core2duo,+vmx (the ,+vmx will enable vmx vt extensions on the guest CPU ) ... <cpu match='exact'> <model fallback='allow'>core2duo</model> <vendor>Intel</vendor> <topology sockets='1'

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)

Hi, Seems this question is not related with libvirt directly, but I still want to ping this list to see if someone can be help. The OS in my desktop box is Ubuntu 12.10, the kernel is 3.5.1. I installed the cgroup utility package with:#apt-get install cgroup-bin, but after I installed these packages successfully, I can't find cpu_quota/cpu_period controller in the /sys/fs/cgroup/cpu folder.

Hi, These are my doubts: 1. I tried live migration of Ubuntu 11.04 from the one physical machine to another using the migrate() function. I connected via tcp in the destination URI and migrated successfully(lesser than 2 seconds). I tried running virsh list --all on the destination PM and confirmed that the VM had been migrated successfully. When I tried checking ps aux | grep vmname where

Hello libvirt users, I'm using the cgroup with QEMU guests. At /etc/libvirt/qemu.conf, I have the following parameter: cgroup_controllers = [ "cpu" ] This controller is successfully mounted and libvirt is able to create subgroups for each VM, it's really great the cgroups support in libvirt. The problem is that I can only set the parameters of a given cgroup under the cpu

.... I have a CentOS 5.n VM running on a Fedora 14 server/host, installed using virt-manager, pretty plain vanilla. I use it to compile binaries to run under RHEL/CentOS 5.n OS. I occasionally notice that when the VM gets paged out by the server, it takes several minutes to get it back in :-/ (see below). On the host, logged in to a shell through a terminal window, this A.M.: [wam at Q6600,

On Mon, Apr 13, 2015 at 01:41:59PM +0530, Jatin Davey wrote: > On 4/13/2015 1:18 PM, Kashyap Chamarthy wrote: > >On Mon, Apr 13, 2015 at 12:14:12PM +0530, Jatin Davey wrote: > >>Hi All > >> > >>I am new to KVM world. I have been using VMware for about a year. > >> > >>In VMware world we can reserve cpu resources for a VM. Say for instance if

Quick question. In my host, I've got two processors with each 6 cores and each core has two threads. I use iometer to do some testings on hard drive performance. I get the idea that using more cores give me better results in iometer. (if it will improve the speed of my guest is an other question...) For a Windows 2012 R2 server guest, can I just give the guest 24 cores? Just to make

Dear All, I'm reaching this mail-list to ask a small question about disabling '3dnowprefetch' CPU feature in Xen Guest using libvirt. This is my environment: Fedora release 26 (Twenty Six) 4.11.0-0.rc3.git0.2.fc26.x86_64 xen-4.8.1-2.fc26.x86_64 libvirt-3.2.1-1.fc26.x86_64 I can disable '3dnowprefetch' CPU feature in guest via 'xl' command,

Hello, I am running into issues restoring VMs during reboot for some of my XP VMs - the environment is QEMU 2.2.0, libvirt 1.2.12 on CentOS 6.5 with KVM and libvirt-guests is set to suspend at shutdown. The weird part is Windows 7 is restored properly from the managedsave however XP does not, doing a start from virsh shows this: virsh # start xp-check error: Failed to start domain xp-check

Hi All I am new to KVM world. I have been using VMware for about a year. In VMware world we can reserve cpu resources for a VM. Say for instance if we need 4 vCPUs with a total of 8000 GHz then we can mention this configuration in vCenter while creating a VM. This guarantees 8000 GHz of cpu resources for the deployed VM. How can i achieve the same thing using KVM ? Please provide as much

I have been using a laptop computer of Pentium III 1.13 Ghz. I heard that AMD's Athlon has excellent floating point capacity. So I bought a Athlon 2200+ laptop yesterday. I expected that new Athlon 2200+ will be twice as fast as the P III 1.13 GB. I ran a R simulation program and the new computer is only 30% faster, in fact slightly slower than a Celeron 1.50 GB laptop. I am very disappointed