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Which information does the CPU Ready counter provide to a vSphere administrator?
A. The virtual machine has requested CPU time, but the VMkernel cannot schedule the virtual CPU on a physical CPU.
B. The virtual machine is idle, and the VMkernel has idle physical CPU cycles.
C. The virtual machine has requested CPU time, and the VMkernel has idle physical CPU cycles.
D. The virtual machine is idle, but the VMkernel cannot schedule the virtual CPU on a physical CPU.
Correct Answer: A
Explanation/Reference:
Explanation:
CPU Ready Time is a vSphere metric that captures the amount of time a virtual machine is ready to make use of CPU but could not schedule time due to all CPU resources being consumed.
Incorrect Answers:
B: When the virtual machine is idle it will not require CPU resources, and will therefore not be in a Ready state.
C: If the virtual machine has requested CPU time, the VMkernel will not idle physical CPU cycles.
D: When the virtual machine is idle it will not require CPU resources, and will therefore not be in a Ready state.
References:
http://houseofbrick.com/cpu-ready-time-blog-part-i/