[Bug 716528] Re: kvm 100% when performing apparently IO operations

[Andres Rodriguez]

** Attachment added: "natty1.xml"
   https://bugs.launchpad.net/ubuntu/+source/qemu-kvm/+bug/716528/+attachment/1841701/+files/natty1.xml

** Description changed:

  Binary package hint: qemu-kvm
  
  I created a VM using virt-manager. During the installation, the process
  kvm has a CPU usage goes of 100%.
  
  Being aware of the virt-manager [1], bug #707313, (using 100% CPU), I
  used top to determine weather this was virt-manager of kvm itself. After
  doing so, I noticed that both, kvm and python processes where more than
  80% of usage. So I decided to go ahead and close virt-manager and the
  VNC window for the current VM. Then, I returned to a terminal to see
  top's output, and it showed now that the kvm process was the only one
  with 100% CPU usage.
  
+ Note that the CPU usage is only at 100% when doing IO, apparently.
+ 
  A video showing this behavior can be found at [2].
  
  [1]: https://bugs.launchpad.net/ubuntu/+source/virt-manager/+bug/707313
  [2]: me.roaksoax.com/kvm.ogv

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https://bugs.launchpad.net/bugs/716528

Title:
  kvm 100% when performing apparently IO operations