Number of CPU cores in the CoreXL license and in the output of "cplic print" is not the same

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Technical Level

Symptoms

The number of CPU cores in the CoreXL license and the output of "cplic print" is not the same.
An Open Server Dell 740/640/ HP ProLiant DL380p shows more cores than there are.

Cause

With the legacy kernel (2.6), HyperThreading was disabled by default for almost all deployments. (It was not disabled on high-end appliances.)

With the new kernel 3.10 for R80.20 ,R80.30 and R80.40, HyperThreading is set in and controlled by the BIOS (on or off).

Therefore, HyperThreading is on by default if it is enabled in the BIOS on these versions:

Note: HyperThreading does not support Open Servers. See sk93000.

Solution

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