2V0-21.23 Question 342
Single answerA system administrator notices that a virtual machine (VM) is experiencing degraded performance during high workloads. The administrator decides to use the vSphere Client performance charts to investigate the issue. Which performance chart metric should the administrator prioritize to determine if the VM is experiencing CPU contention?
- A
CPU Ready time
- B
Memory Ballooning
- C
Disk Latency
- D
Network Packets Dropped
Show answer and explanation
Correct answer: A
Explanation
The correct answer is 'CPU Ready time' because it specifically measures the time a VM waits for CPU resources to become available. If CPU Ready time is high, it indicates resource contention on the host or cluster, which directly impacts the VM's performance. The other options pertain to different resource areas such as memory, storage, or network, and do not help in diagnosing CPU contention.
- A. Correct.
CPU Ready time indicates the amount of time the VM is ready to execute tasks but is waiting for physical CPU resources. High CPU ready time suggests CPU contention in the host or cluster.
- B. Incorrect.
Memory Ballooning is a memory reclamation technique that does not directly relate to CPU contention. It is more relevant in memory resource issues.
- C. Incorrect.
Disk Latency measures the time taken for disk I/O operations, which is unrelated to CPU contention. It is used to analyze storage performance issues instead.
- D. Incorrect.
Network Packets Dropped refers to network performance issues, such as insufficient bandwidth or misconfigured network settings. It does not assist in identifying CPU contention.