Comment 14 for bug 1174654

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
>>>
>