Intel Speedstep® Technology and Intel® Hyper-Threading Technology settings can impact the overall performance of a cluster. Intel® Cluster Checker verifies these settings in the speedstep and core_count checks, respectively.
For the Intel® Xeon® processor 5500 series and later, by default, the core_count check verifies that Intel® Hyper-Threading Technology is enabled. On earlier processors, the default core_count behavior is to verify that Intel® Hyper-Threading Technology is disabled. For any processor, the state to be verified can be configured. For example, to always verify that Intel® Hyper-Threading Technology is enabled:
By default, Intel® Cluster Checker verifies that Intel Speedstep® Technology is disabled. The speedstep check can be configured to verify either state. For example, to verify that Intel Speedstep® Techology is enabled:
Note: Refer to the documentation provided by your hardware vendor for more information on how to enable or disable Intel Speedstep® Technology or Intel® Hyper-Threading Technology.