NCP-MCI-6.10 · Question #116
An administrator is experiencing performance issues within a VM and believes that more vCPU should be added to the specific VM. The cluster as a whole appears to be performing well. Which two metrics
The correct answer is A. VM CPU Usage B. VM CPU Ready Time. VM CPU Usage (A) shows how much of the VM's allocated vCPUs are actively being consumed. If this metric is consistently near 100%, the VM is CPU-bound and may benefit from additional vCPUs. VM CPU Ready Time (B) measures how long a VM is waiting in a queue to be scheduled on a ph
Question
An administrator is experiencing performance issues within a VM and believes that more vCPU should be added to the specific VM. The cluster as a whole appears to be performing well. Which two metrics should be analyzed to determine if adding more vCPUs is warranted? (Choose two.)
Options
- AVM CPU Usage
- BVM CPU Ready Time
- CHost Memory Swap Out Rate
- DHost CPU usage
How the community answered
(26 responses)- A58% (15)
- C12% (3)
- D31% (8)
Explanation
VM CPU Usage (A) shows how much of the VM's allocated vCPUs are actively being consumed. If this metric is consistently near 100%, the VM is CPU-bound and may benefit from additional vCPUs. VM CPU Ready Time (B) measures how long a VM is waiting in a queue to be scheduled on a physical CPU core. High CPU Ready values (generally above 5%) indicate scheduling contention and are one of the strongest signals that a VM is not getting enough CPU time. Together, these two metrics give a complete picture of whether the VM's CPU allocation is the bottleneck. Host Memory Swap Out Rate (C) is irrelevant to a CPU analysis. Host CPU Usage (D) is a cluster-level metric - the question already states the cluster is performing well, making this unnecessary for diagnosing a single VM's CPU needs.
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