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Re: [Qemu-devel] [Bug 1174654] Re: qemu-system-x86_64 takes 100% CPU aft
From: |
tobias |
Subject: |
Re: [Qemu-devel] [Bug 1174654] Re: qemu-system-x86_64 takes 100% CPU after host machine resumed from suspend to ram |
Date: |
Fri, 18 Oct 2013 07:41:11 -0000 |
Hello MIke,
but this concerns a windows guest. you mean a kernel configuration
within the guest (aka recompile ?) or a boot parameter within the guest ?
regards,
Tobias.
On 18-10-13 09:26, mike wrote:
> On 10/18/2013 03:12 PM, tobias wrote:
>> Hello Mike,
>>
>> Thanks a lot for getting back on this.
>> Is the "cpu idle driver" a command line option I need to specify for
>> qemu (the -cpu option ?)
>> I could not find a reference to "idle" in the man page.
> You need to check the guest kernel config file.
>
> Thanks
> Mike
>> regards,
>>
>> Tobias.
>>
>> On 18-10-13 04:33, mike wrote:
>>> On 10/18/2013 04:29 AM, tobias wrote:
>>>> hi,
>>>>
>>>> tried your option but it does not help. (cpu usage is still high)
>>>> below my command line syntax:
>>>> qemu-system-x86_64 -global mc146818rtc.lost_tick_policy=slew -machine
>>>> accel=kvm:tcg -name win7 -S -machine pc-i440fx-1.4,accel=kvm,usb=off
>>>> -m 2048 -realtime mlock=off -smp 1,sockets=1,cores=1,threads=1 -uuid
>>>> 813f5806-64ec-3319-452a-5e1834e753c9 -no-user-config -nodefaults
>>>> -chardev
>>>> socket,id=charmonitor,path=/var/lib/libvirt/qemu/win7.monitor,server,nowait
>>>>
>>>>
>>>> -mon chardev=charmonitor,id=monitor,mode=control -rtc base=localtime
>>>> -no-shutdown -device ich9-usb-ehci1,id=usb,bus=pci.0,addr=0x5.0x7
>>>> -device
>>>> ich9-usb-uhci1,masterbus=usb.0,firstport=0,bus=pci.0,multifunction=on,addr=0x5
>>>>
>>>>
>>>> -device
>>>> ich9-usb-uhci2,masterbus=usb.0,firstport=2,bus=pci.0,addr=0x5.0x1
>>>> -device
>>>> ich9-usb-uhci3,masterbus=usb.0,firstport=4,bus=pci.0,addr=0x5.0x2
>>>> -device virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x8 -drive
>>>> file=/data/vmware/win7.img,if=none,id=drive-virtio-disk0,format=qcow2
>>>> -device
>>>> virtio-blk-pci,scsi=off,bus=pci.0,addr=0x6,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1
>>>>
>>>>
>>>> -device usb-tablet,id=input0 -device
>>>> intel-hda,id=sound0,bus=pci.0,addr=0x4 -device
>>>> hda-duplex,id=sound0-codec0,bus=sound0.0,cad=0 -device
>>>> virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x7 -vga std
>>> Hi, have you enable the kernel CPU idle driver? especially the guest
>>> kernel.
>>>
>>> Thanks
>>> Mike
>>>
>
--
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1174654
Title:
qemu-system-x86_64 takes 100% CPU after host machine resumed from
suspend to ram
Status in QEMU:
Confirmed
Status in “qemu” package in Ubuntu:
Invalid
Bug description:
I have Windows XP SP3 inside qemu VM. All works fine in 12.10. But
after upgraiding to 13.04 i have to restart the VM each time i
resuming my host machine, because qemu process starts to take CPU
cycles and OS inside VM is very slow and sluggish. However it's still
controllable and could be shutdown by itself.
According to the taskmgr any active process takes 99% CPU. It's not
stuck on some single process.
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1174654/+subscriptions
- Re: [Qemu-devel] [Bug 1174654] Re: qemu-system-x86_64 takes 100% CPU after host machine resumed from suspend to ram,
tobias <=