Refer to the Exhibit. An administrator is troubleshooting intermittent poor performance of virtual machines in a vSphere 6.x cluster. Investigating esxtop data shows that the only statistic that stands out is %CSTP as depicted in Exhibit 1:

The administrator proceeds to switch to the Power Management screen and observes the data depicted in Exhibit 2:

Based on the information in the exhibits, which two configurations are probable causes of the poor performance? (Choose two.)

Question

Refer to the Exhibit. An administrator is troubleshooting intermittent poor performance of virtual machines in a vSphere 6.x cluster. Investigating esxtop data shows that the only statistic that stands out is %CSTP as depicted in Exhibit 1:

The administrator proceeds to switch to the Power Management screen and observes the data depicted in Exhibit 2:

Based on the information in the exhibits, which two configurations are probable causes of the poor performance? (Choose two.)

Accepted Answer

A. The active power policy is set to Low Power. The Low Power active policy in vSphere instructs the host to aggressively throttle CPU frequency, reducing processing capacity and causing vCPUs in multi-vCPU VMs to desynchronize, which directly elevates %CSTP. B. The host has active Sleep States configured in the BIOS. Active Sleep States (C-states) in the BIOS allow physical CPU cores to enter deep sleep when idle; the latency required to wake a halted core forces co-vCPUs to wait, which is reflected as increased %CSTP in esxtop.

Answer

C. The active power policy is set to High Performance. High Performance policy disables power savings and keeps CPUs at maximum frequency, which would reduce co-stop wait times rather than cause them.

Answer

D. The host has active Power States configured in the BIOS. Power States (P-states/frequency scaling) are the mechanism already covered by the vSphere power policy; the relevant BIOS feature causing halt-based latency is C-states (Sleep States), not a generic 'Power States' option.

Refer to the Exhibit. An administrator is troubleshooting intermittent poor performance of virtual machines in a vSphere 6.x cluster. Investigating esxtop data shows that the only statistic that stand

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