VCP-DCV vSphere Performance and Scaling Practice Question
A VM configured with 4 vCPUs shows high co-stop time in performance metrics. What does co-stop time indicate and which action should be taken to improve performance?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Reduce the number of vCPUs to match workload requirements
Co-stop time is time when the VM is ready to run but waiting for all vCPUs to be scheduled simultaneously. Reducing the number of vCPUs can alleviate this.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Reduce the number of vCPUs to match workload requirements
Why this is correct
Fewer vCPUs reduce co-scheduling demands and can lower co-stop time.
- ✗
Add more vCPUs to the VM
Why it's wrong here
Adding vCPUs increases co-scheduling overhead and likely worsens co-stop.
- ✗
Enable hyperthreading on the host
Why it's wrong here
Hyperthreading does not directly reduce co-stop time.
- ✗
Increase the VM's memory reservation
Why it's wrong here
Memory reservation does not affect CPU co-scheduling.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This VCP-DCV practice question is part of Courseiva's free VMware certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the VCP-DCV exam.