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Why does gettimeofday() take longer to execute on a KVM RHEL guest using KVM clock than on a RHEL guest running on VMWare ESXi?

Solution Verified - Updated 2013-04-18T18:56:01+00:00 -

Issue

Why does gettimeofday() take longer to execute on a KVM RHEL guest using KVM clock than on a RHEL guest running on VMWare ESXi?
Is kvm clock gettimeofday() impemented as a vsyscall?

Environment

Red Hat Enterprise Linux 5, 6

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