2V0-21.23 Question 343
Single answerA VMware administrator is troubleshooting a performance issue on a virtual machine (VM). They suspect the VM is experiencing high CPU contention due to resource constraints. Using the vSphere Client, they navigate to the Performance charts for the VM. Which metric should the administrator focus on to confirm that CPU contention is causing the issue?
- A
CPU Ready Time
- B
CPU Usage (%)
- C
Memory Ballooning
- D
Disk Latency
Show answer and explanation
Correct answer: A
Explanation
To diagnose CPU contention, the administrator should focus on the CPU Ready Time metric. This metric indicates how long a VM's virtual CPU is waiting for physical CPU resources to execute instructions. High CPU Ready Time values suggest that there is contention for CPU resources, which could lead to performance degradation. Other metrics such as CPU Usage (%) or Memory Ballooning do not provide direct insights into CPU contention.
- A. Correct.
CPU Ready Time measures the amount of time a virtual machine's CPU is ready to execute but is waiting for CPU resources. High CPU Ready Time indicates contention for CPU resources, which confirms a CPU scheduling issue.
- B. Incorrect.
CPU Usage (%) shows the percentage of CPU being used by the virtual machine but does not directly indicate contention or scheduling delays.
- C. Incorrect.
Memory Ballooning is a memory management feature and is unrelated to CPU contention or performance issues.
- D. Incorrect.
Disk Latency measures the time taken for disk I/O operations and is unrelated to CPU performance issues.