High CPU load on KVM guest and host

Solution Verified - Updated -

Issue

Java applications launched in a KVM guest cause 100% CPU utilization on guest and host. The same application on physical environment or Xen guest does not cause any CPU load problems.

Environment

  • Red Hat Enterprise Linux 5.4 in a KVM guest with paravirtualized clock enabled
  • x86_64 architecture
  • KVM virtualization

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