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Qemu-system-x86 High Cpu


This will enable advanced cpu flags, maybe AIDA64 is testing them. #9 spirit, Jul 7, 2015 Martin Ezequiel New Member Joined: Jan 29, 2015 Messages: 9 Likes Received: 0 I'm This value should be 0 outside a virtualized environment. it remains at 100%. Get your own in 60 seconds. http://technologyprometheus.com/cpu-usage/system-idle-process-high-cpu-usage.html

Join them; it only takes a minute: Sign up KVM idle VM CPU 100% usage with ehci up vote 1 down vote favorite My idle KVM Windows VM used 100% CPU. Buy now! There are no message in kernel log when it happened, I try to rebuild kvm and add some debug info , I found the cpu exit reason is EXIT_REASON_PAUSE_INSTRUCTION. As this bug is consistently reproducible under F12, I'm changing the product version to reflect this.

Qemu-system-x86 High Cpu

What was really aggravating is prior to the upgrades and reinstall everything was running perfectly. Considering this is running on software RAID (mdadm) with only 3 disks I found this to be acceptable. However, I see the same problem after > booting a VM with Microsoft Windows XP Pro.

Unfortunately, the problem still exists. Comment 23 Nenad Opsenica 2010-04-12 06:03:03 EDT Similar problem happens to me with Centos 5.4 and Win XPpro VM on one of the hardware machines. Sl Aug27 73740:11 /usr/bin/kvm -name zjx_1-clone -S -machine pc-i440fx-1.5,accel=kvm,usb=off,system=windows -cpu qemu64,hv_relaxed,hv_spinlocks=0x2000 -m 16384 -smp 12,maxcpus=72,sockets=12,cores=6,threads=1 -uuid 8c8b9abf-e9a6-4c3e-93cd-137a9550e593 -no-user-config -nodefaults -chardev so cket,id=charmonitor,path=/var/lib/libvirt/qemu/zjx_1-clone.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=localtime,clock=vm,driftfix=slew -no-hpet -no-shutdown -device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 -device Kvm Cpu Usage I need to virtualize only 3 VMs on Proxmox, and Windows should get most of the physical resources, buy if i can't get at least a little more of the CPU

If I start a VM with 2 > virtual CPUs, the physical box uses 100% on each core. Qemu Kvm 100% Cpu As a final performance enhancement for the RAID I increased the stripe_cache_size to 8192. We think our community is one of the best thanks to people like you! I've checked both distribution and the trunk version.

However it's not clear that they are the same problem. Vhost_net In my case the cpu choking due to I/O activity on guest is sporadic. Windows always have more overhead than linux currently. [/QUOTE] Also i still don't understand why is AIDA 64 showing me that the speed of the CPU is 366 MHz per core, So, THANK YOU.

Qemu Kvm 100% Cpu

Windows, at boot-up, touches all the pages in RAM and zeroes them out. This had little effect, but is should provide more consistent performance under higher load. Qemu-system-x86 High Cpu kvm openstack qemu openstack-autopilot share|improve this question edited Dec 27 '14 at 22:33 asked Dec 23 '14 at 22:58 Riccardo Magrini 533622 This indicates that you have some VM Qemu-system-x86_64 -machine Accel=kvm Version-Release number of selected component (if applicable): etherboot-zroms-kvm-5.4.4-17.fc11.noarch libvirt-0.6.2-19.fc11.x86_64 libvirt-python-0.6.2-19.fc11.x86_64 python-virtinst-0.400.3-12.fc11.noarch qemu-common-0.10.6-9.fc11.x86_64 qemu-img-0.10.6-9.fc11.x86_64 qemu-kvm-0.10.6-9.fc11.x86_64 qemu-system-x86-0.10.6-9.fc11.x86_64 virt-manager-0.7.0-8.fc11.x86_64 How reproducible: Very.

It's 100% reproducible for me. http://technologyprometheus.com/cpu-usage/bf1-high-cpu-usage.html share|improve this answer answered Jan 31 '15 at 18:23 Riccardo Magrini 533622 4 hi, can you tell us what did you modify on bios? –Adam Jun 6 '15 at 11:18 you mean a kernel configuration >> within the guest (aka recompile ?) or a boot parameter within the >> guest ? >> > Oh, sorry, I assume it is linux guest This problem has been haunting me for MONTHS. Qemu-system-x86_64 High Cpu

mro95 closed this Dec 15, 2015 Sign up for free to join this conversation on GitHub. To answer your specific question, it remains at 100% well after the the VM with Win XP Pro has booted, apps have loaded and the system has had time to settle. In how many bits do I fit Very particular female bathroom issues A World Where Everyone Forgets About You Is there a toy example of an axiomatically defined system/ structure? have a peek here But the problem in using KVM on idle mode consumes Between 200 and 400 %, Because has assigned 4 cores.

I've checked both distribution and the trunk version. > So suspend this bug until someone can stably reproduce it. Useful Searches Recent Posts Menu Forums Forums Quick Links Search Forums Recent Posts Members Members Quick Links Notable Members Current Visitors Recent Activity New Profile Posts Menu Log in Sign up Why call it a "major" revision if the suggested changes are seemingly minor?

At most the guest now only uses the amount of cores allotted on average (sometimes 5% more for IO overhead).

Affecting: QEMU Filed here by: Maxim Loparev When: 2013-04-30 Confirmed: 2013-04-30 Target Distribution Baltix BOSS Juju Charms Collection Elbuntu Guadalinex Guadalinex Edu Kiwi Linux nUbuntu PLD Linux Tilix tuXlab Ubuntu Ubuntu It's not stuck on some single process. You can check if the driver is being used by any guests with the following: root> ps -ef | grep vhost- Sample Output: root 15976 2 0 22:20 ? 00:00:00 [vhost-15974] When the VM hangs , if I execute "virsh suspend vm-name" and "virsh resume vm-name", the WinServer2008 will change to normal , and work fine not hangs anymore.

In a kvm has installed windows server 2012 r2 standard. Stay logged in Proxmox Support Forum Forums > Proxmox Virtual Environment > Proxmox VE: Installation and configuration > Toggle Width Home Contact Us Help Terms and Rules Top About The Proxmox FireEmerald commented Nov 12, 2015 Got the same problem on: Linux 3.16.0-4-amd64 #1 SMP Debian 3.16.7-ckt11-1+deb8u5 (2015-10-09) x86_64 GNU/Linux htop: 1.0.3-1 vmstat -S K: procs -----------memory---------- ---swap-- -----io---- -system-- ------cpu----- r http://technologyprometheus.com/cpu-usage/hp-high-cpu-usage.html A couple questions if you don't mind.

Steps to Reproduce: winXP: hot reboot the xp guest os, hot reboot is necessary. I'm not sure whether it's qemu's bug or kvm's. up vote 7 down vote favorite 1 I've changed my old laptop with a new one but I don't understand why using on both virt-manager the qemu-system-x86 on new one takes default kvm64 ?

Currently there is installed a MySql database on the Windows, and when is in activity it has a lot of movement, and queries executing, so it would make sense if there Reply blakemesdag says: April 14, 2014 at 5:36 pm Hi Eddie, You should have one [vhost-] entry for each network interface. so are there any recommendations you would have to work around it ? I was however experiencing connection drops that would not recover on the guest, even after ifdown and ifup on the primary interface.

Linux guests do not get the high cpu usage. Approximately 30 (thirty) days from now Fedora will stop maintaining and issuing updates for Fedora 12. How reproducible: WinXP: seems always. Comment 10 spamgrinder 2010-02-01 15:16:30 EST I just did a clean install of F12 on the original hardware and repeated the above procedure to reproduce this bug.

linux guests do not show a high cpu usage after suspend resume. No, create an account now. Home | New | Search | [?] | Reports | Requests | Help | NewAccount | Log In [x] | Forgot Password Login: [x] | Report Bugzilla Bug Legal current community regards, Tobias.