[Qemu-devel] [Bug 1174654] [NEW] qemu-system-x86_64 takes 100% CPU after host machine resumed from suspend to ram

[Qemu-devel] [Bug 1174654] [NEW] qemu-system-x86_64 takes 100% CPU after host machine resumed from suspend to ram

[Maxim Loparev]

Public bug reported:

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
stucked on some single process.

** Affects: qemu
     Importance: Undecided
         Status: New

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Title:
  qemu-system-x86_64 takes 100% CPU after host machine resumed from
  suspend to ram

Status in QEMU:
  New

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
  stucked on some single process.

To manage notifications about this bug go to:
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[Qemu-devel] [Bug 1174654] Re: qemu-system-x86_64 takes 100% CPU after host machine resumed from suspend to ram

[Maxim Loparev]

core i3-2120 with kvm accel used on host.

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Title:
  qemu-system-x86_64 takes 100% CPU after host machine resumed from
  suspend to ram

Status in QEMU:
  New

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
  stucked on some single process.

To manage notifications about this bug go to:
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Re: [Qemu-devel] [Bug 1174654] [NEW] qemu-system-x86_64 takes 100% CPU after host machine resumed from suspend to ram

[Serge Hallyn]

Thanks for reporting this bug.  I won't be able to test this for another
week or two (waiting on a license).  Would it be possible for you to
test with the latest upstream git?

	sudo apt-get install git
	git clone git://git.qemu.org/qemu.git
	cd qemu
	./configure x86_64-softmmu
	make
	cd x86_64-softmmu
	sudo mv /usr/bin/qemu-system-x86 /usr/bin/qemu-system-x86.orig
	sudo cp x86_64-softmmu /usr/bin/

Then re-test your guest.

If that's not possible then please let us know.

 importance: high
 status: incomplete


** Changed in: qemu
   Importance: Undecided => High

** Changed in: qemu
       Status: New => Incomplete

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Title:
  qemu-system-x86_64 takes 100% CPU after host machine resumed from
  suspend to ram

Status in QEMU:
  Incomplete

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
  stucked on some single process.

To manage notifications about this bug go to:
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[Qemu-devel] [Bug 1174654] Re: qemu-system-x86_64 takes 100% CPU after host machine resumed from suspend to ram

[Maxim Loparev]

at least on the clone of  
git remote -v
origin	http://repo.or.cz/r/qemu.git (fetch)
origin	http://repo.or.cz/r/qemu.git (push)
i got
 ./configure x86_64-softmmu
ERROR: unknown option x86_64-softmmu

I can't clone the repo over git protocol as i'm behind the proxy.

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Title:
  qemu-system-x86_64 takes 100% CPU after host machine resumed from
  suspend to ram

Status in QEMU:
  Incomplete

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
  stucked on some single process.

To manage notifications about this bug go to:
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[Qemu-devel] [Bug 1174654] Re: qemu-system-x86_64 takes 100% CPU after host machine resumed from suspend to ram

[Maxim Loparev]

Ok, found the corrent link for the main repo
http://git.qemu.org/git/qemu.git, but ./configure still doesn't
recognize this option.

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Title:
  qemu-system-x86_64 takes 100% CPU after host machine resumed from
  suspend to ram

Status in QEMU:
  Incomplete

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
  stucked 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

[Serge Hallyn]

Quoting Maxim Loparev (laplandersan@gmail.com):
> at least on the clone of  
> git remote -v
> origin	http://repo.or.cz/r/qemu.git (fetch)
> origin	http://repo.or.cz/r/qemu.git (push)
> i got
>  ./configure x86_64-softmmu
> ERROR: unknown option x86_64-softmmu

Sorry!  That was supposed to read

  ./configure --target-list="x86_64-softmmu"

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Title:
  qemu-system-x86_64 takes 100% CPU after host machine resumed from
  suspend to ram

Status in QEMU:
  Incomplete

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
  stucked on some single process.

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1174654/+subscriptions

[Qemu-devel] [Bug 1174654] Re: qemu-system-x86_64 takes 100% CPU after host machine resumed from suspend to ram

[Maxim Loparev]

Same issue after resume with this -softmmu VM.
At start it also has the new message 
qemu-system-x86_64: pci_add_option_rom: failed to find romfile "efi-e1000.rom"

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Title:
  qemu-system-x86_64 takes 100% CPU after host machine resumed from
  suspend to ram

Status in QEMU:
  Incomplete

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
  stucked on some single process.

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1174654/+subscriptions

[Qemu-devel] [Bug 1174654] Re: qemu-system-x86_64 takes 100% CPU after host machine resumed from suspend to ram

[Serge Hallyn]

** Also affects: qemu (Ubuntu)
   Importance: Undecided
       Status: New

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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:
  Confirmed

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
  stucked on some single process.

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1174654/+subscriptions

[Qemu-devel] [Bug 1174654] Re: qemu-system-x86_64 takes 100% CPU after host machine resumed from suspend to ram

[Serge Hallyn]

** Changed in: qemu (Ubuntu)
       Status: New => Confirmed

** Changed in: qemu
       Status: Incomplete => Confirmed

** Changed in: qemu (Ubuntu)
   Importance: Undecided => High

** Tags added: windows windows-xp

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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:
  Confirmed

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
  stucked on some single process.

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1174654/+subscriptions

[Qemu-devel] [Bug 1174654] Re: qemu-system-x86_64 takes 100% CPU after host machine resumed from suspend to ram

[Maxim Loparev]

The issue mostly gone after cold reboot via suspend to disk. I managed to reproduce it only once after reboot and it grubs CPU for only minute or two while i checking it and than returned to normal CPU usage. I've checked both distribution and the trunk version.
So suspend this bug until someone can stably reproduce it.

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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:
  Confirmed

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
  stucked 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

[Serge Hallyn]

Quoting Maxim Loparev (laplandersan@gmail.com):
> The issue mostly gone after cold reboot via suspend to disk. I managed to reproduce it only once after reboot and it grubs CPU for only minute or two while i checking it and than returned to normal CPU usage. I've checked both distribution and the trunk version.
> So suspend this bug until someone can stably reproduce it.

Thanks, I'll mark it invalid (meaning "can't reproduce it to get more
information") for now, please do re-open if anyone can reproduce.

 status: invalid


** Changed in: qemu (Ubuntu)
       Status: Confirmed => Invalid

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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
  stucked on some single process.

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1174654/+subscriptions

[Qemu-devel] [Bug 1174654] Re: qemu-system-x86_64 takes 100% CPU after host machine resumed from suspend to ram

[John Basila]

I don't know if this will help, but I had a similar problem.

When creating a snapshot image of an XP machine, all works just fine
when loading it. As time passes on the host the loadvm start to become
very slow.

To reproduce:
1. Create a snapshot image (savevm)
2. leave QEMU
3. move the *HOST* clock one month in the future
4. Start QEMU with -loadvm

It turns out that the "-rtc clock=vm" made this disappear. When using
the default caused the problem.

John

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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
  stucked on some single process.

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1174654/+subscriptions

[Qemu-devel] [Bug 1174654] Re: qemu-system-x86_64 takes 100% CPU after host machine resumed from suspend to ram

[Richard Jones]

** Description changed:

  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
- stucked on some single process.
+ stuck on some single process.

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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

[Qemu-devel] [Bug 1174654] Re: qemu-system-x86_64 takes 100% CPU after host machine resumed from suspend to ram

[tobias]

Hi,

I am also encountering the bug of high cpu usage for a windows guest after suspend resume of my ubuntu host. Problem was in 13.04 but it's also still there in 13.10.
The windows guest has virtio / spice  enabled.
Linux guests do not get the high cpu usage.
Are there any more logs required or is investigation going on upstream ?
I am not sure where to look or curious whether there are other workarounds.

** Attachment added: "win7.xml"
   https://bugs.launchpad.net/qemu/+bug/1174654/+attachment/3875634/+files/win7.xml

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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

[Qemu-devel] [Bug 1174654] Re: qemu-system-x86_64 takes 100% CPU after host machine resumed from suspend to ram

[Paolo Bonzini]

Please try "-global mc146818rtc.lost_tick_policy=slew".

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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

[Qemu-devel] [Bug 1174654] Re: qemu-system-x86_64 takes 100% CPU after host machine resumed from suspend to ram

[tobias]

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

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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

[mike]

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
>

Re: [Qemu-devel] [Bug 1174654] Re: qemu-system-x86_64 takes 100% CPU after host machine resumed from suspend to ram

[tobias appelo]

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.

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
>>
>
>

Re: [Qemu-devel] [Bug 1174654] Re: qemu-system-x86_64 takes 100% CPU after host machine resumed from suspend to ram

[mike]

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
>>

Re: [Qemu-devel] [Bug 1174654] Re: qemu-system-x86_64 takes 100% CPU after host machine resumed from suspend to ram

[tobias]

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]

Hi,

ok confusion cleared :-)
actually i only have this issue with windows guests. linux guests do not 
show a high cpu usage after suspend resume.
so are there any recommendations you would have to work around it ?

regards,

Tobias.


On 18-10-13 09:42, mike wrote:
> On 10/18/2013 03:41 PM, tobias appelo wrote:
>> 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 ?
>>
> Oh, sorry, I assume it is linux guest :)
>
> for windows, I have no idea of it :)
>
> Thanks
> Mike
>> 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

[Qemu-devel] [Bug 1174654] Re: qemu-system-x86_64 takes 100% CPU after host machine resumed from suspend to ram

[tobias]

Did some testing: if one pauses the vms that run windows before suspending ubuntu no high cpu usage is there once the host and windows vms are resumed.
 for me it's workable then in ubuntu by using a suspend / resume script with power manaager. I put this in /etc/pm/sleep.d (and make it executable) :

#!/bin/bash
PS_VM=/var/run/paused_vms

is_there_virsh () {
if [[ -z `which virsh` ]]
then echo "no actions for suspend or resume required"
exit 0
fi
}
case "$1" in
    suspend)
        is_there_virsh
        echo "" > /var/run/paused_vms
        for i in $(virsh list --state-running | grep running | awk {'print $2'})
        do echo $i >> /var/run/paused_vms
           virsh suspend $i
        done
        ;;
    resume)
        is_there_virsh
        for i in $(cat $PS_VM)
        do virsh resume $i
        done
        # optionally remove the file but this seems not required?
        rm $PS_VM
        ;;
    *)
        ;;
esac

-- 
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

[Qemu-devel] [Bug 1174654] Re: qemu-system-x86_64 takes 100% CPU after host machine resumed from suspend to ram

[Matt Keith]

Thanks for posting your script Tobias, I'm having the same problem on
Fedora 20 and the script alleviates the symptom.

Matt

-- 
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

[Qemu-devel] [Bug 1174654] Re: qemu-system-x86_64 takes 100% CPU after host machine resumed from suspend to ram

[derek]

I am running Ubuntu Wily (the 20150717 daily build) can reproduce this
problem, whatever the guest is Linux or Windows, after host got resumed
from suspend, the kvm (qemu-system-x86_64) process becomes a 100% cpu
usage,

user@ubuntu-mate:~$ kvm --version
QEMU emulator version 2.3.0 (Debian 1:2.3+dfsg-5ubuntu2), Copyright (c) 2003-2008 Fabrice Bellard

I wonder can the kvm program be fixed?

-- 
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

[Qemu-devel] [Bug 1174654] Re: qemu-system-x86_64 takes 100% CPU after host machine resumed from suspend to ram

[varacanero]

Same for me here, Ubuntu wily.
I'm using vagrant-libvirt, and my hosts also very often run wild with 100% cpu usage after suspend.

-- 
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

[Qemu-devel] [Bug 1174654] Re: qemu-system-x86_64 takes 100% CPU after host machine resumed from suspend to ram

[Jürgen Veidt]

I observed a similar behavior with a different application on a Windows host. The application is using the multimedia timer. In my case it seems that the timer is catching up the ticks missed during suspend to ram after resume. The timer thread performing the callbacks has high-priority on Windows and makes the host machine almost unusable for a certain time depending on the suspend duration. 
Maybe it is a similar situation here?

-- 
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

[Qemu-devel] [Bug 1174654] Re: qemu-system-x86_64 takes 100% CPU after host machine resumed from suspend to ram

[Francois Gouget]

This sounds sort of like a problem I have with reverting to live snapshots.
What I found out is that this is related to restoring the clock in the guest. You can find out more about it there:
https://bugs.launchpad.net/qemu/+bug/1505041

The takeaway is that a workaround is to set track='guest' on the rtc
timer. For instance:

    <clock offset='localtime'>
      <timer name='rtc' track='guest'/>
    </clock>

If you have track='catchup' QEMU seems to try to send millions of
interrupts so the guest clock will catch up to the current time, which
can take minutes during which the guest is unusable.

It is possible this no longer happens though as I have had this
workaround in place for quite some time but nobody formally said this is
fixed or pointed to a commit fixing this.

-- 
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

[Qemu-devel] [Bug 1174654] Re: qemu-system-x86_64 takes 100% CPU after host machine resumed from suspend to ram

[Mark A. Hershberger]

I was seeing this problem when my Debian laptop suspended.  The CentOS
guest would begin consuming a lot of cpu and only a hard-reset would fix
it.

Changing the rtc line to

      <timer name='rtc' track='guest'/>

seems to have fixed it, though I haven't done extensive testing yet.

Thanks!

-- 
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

[Bug 1174654] Re: qemu-system-x86_64 takes 100% CPU after host machine resumed from suspend to ram

[Thomas Huth]

The QEMU project is currently considering to move its bug tracking to another system. For this we need to know which bugs are still valid and which could be closed already. Thus we are setting older bugs to "Incomplete" now.
If you still think this bug report here is valid, then please switch the state back to "New" within the next 60 days, otherwise this report will be marked as "Expired". Or mark it as "Fix Released" if the problem has been solved with a newer version of QEMU already. Thank you and sorry for the inconvenience.


** Changed in: qemu
       Status: Confirmed => Incomplete

-- 
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:
  Incomplete
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

[Bug 1174654] Re: qemu-system-x86_64 takes 100% CPU after host machine resumed from suspend to ram

[Launchpad Bug Tracker]

[Expired for QEMU because there has been no activity for 60 days.]

** Changed in: qemu
       Status: Incomplete => Expired

-- 
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:
  Expired
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