An administrator notices that on an intermittent basis the virtual machines are running slowly. The virtual machines are correctly sized, and the hardware has enough free resources to cope with demand

The correct answer is C. The physical servers are throttling due to overheating.. When physical servers overheat, the CPU engages thermal throttling - automatically reducing clock speed to lower heat output. This is the most likely cause when VMs are intermittently slow despite adequate resources and correct sizing. Power draw issues (A) would cause shutdowns,

Hardware and network troubleshooting

Question

An administrator notices that on an intermittent basis the virtual machines are running slowly. The virtual machines are correctly sized, and the hardware has enough free resources to cope with demand. Which of the following is most likely the cause?

Options

AThe physical servers are not able to draw enough power.
BThe physical servers do not have enough network bandwidth.
CThe physical servers are throttling due to overheating.
DThe physical servers are contending for resources.

How the community answered

(34 responses)

A
3% (1)
B
6% (2)
C
76% (26)
D
15% (5)

Explanation

When physical servers overheat, the CPU engages thermal throttling - automatically reducing clock speed to lower heat output. This is the most likely cause when VMs are intermittently slow despite adequate resources and correct sizing. Power draw issues (A) would cause shutdowns, not slowdowns. Insufficient network bandwidth (B) would cause consistent, not intermittent, slowness. Resource contention (D) is ruled out because the hardware has enough free resources.

Topics

#Virtualization troubleshooting#Server performance#Thermal throttling#Hardware issues

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