Oracle VirtualBox VBoxHeadless Process Is Using More Than 100% CPU. Why Is This ? (Doc ID 1499652.1)

Last updated on JULY 08, 2016

Applies to:

Oracle Virtual Desktop Infrastructure - Version 3.4 to 3.5.1 [Release 3.0]
Oracle VM VirtualBox - Version 4.0 to 4.3 [Release 4.0]
Information in this document applies to any platform.

Symptoms

In an Oracle Virtual Desktop Infrastructure (VDI) cluster in which VirtualBox is used as the Desktop Provider and running on a separate multi-core server,  a look at the CPU usage of the VBoxHeadless process shows it as using more than 100% CPU. This could be from "top" or "prstat" etc. 

An example output from "top":

 

While this could identify an issue, the reason for this high CPU usage needs to be understood first, and this article attempts to example a possible reason.

Cause

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