VCP-VMC 2024 Question 172
Select 3A company is experiencing performance issues with their VMware Cloud on AWS environment. Virtual machines are running slower than expected, and workloads are not meeting their performance SLAs. After reviewing the environment, you notice high memory ballooning and swapping on the ESXi hosts. Which of the following actions should you take to resolve the issue?
- A
Increase the size of the VMware Cloud on AWS cluster by adding more hosts.
- B
Reduce the memory reservation settings on the virtual machines.
- C
Adjust the memory shares for critical workloads to prioritize their access to resources.
- D
Enable Transparent Page Sharing (TPS) to optimize memory utilization.
- E
Migrate non-critical workloads to another cluster to reduce resource contention.
Show answer and explanation
Correct answers: A, C, E
Explanation
Memory ballooning and swapping occur when there is significant memory contention in an environment. Adding more hosts increases the available memory resources across the cluster, while adjusting memory shares ensures critical workloads are prioritized. Migrating non-critical workloads to another cluster reduces the overall contention, addressing the performance issue. TPS, while helpful for memory optimization, does not directly address the root cause of ballooning and swapping in this scenario.
- A. Correct.
Increasing the size of the cluster by adding more hosts will provide additional memory resources, which can help mitigate the memory ballooning and swapping issues.
- B. Incorrect.
Reducing memory reservation settings can free up memory for other workloads, but in this scenario, it could exacerbate the issue by reducing guaranteed resources for VMs.
- C. Correct.
Adjusting memory shares for critical workloads ensures that they receive prioritized access to memory resources, helping meet performance SLAs.
- D. Incorrect.
While Transparent Page Sharing (TPS) can optimize memory usage, it is not a primary solution for resolving ballooning and swapping issues, especially in environments that already have high memory contention.
- E. Correct.
Migrating non-critical workloads to another cluster can reduce memory contention on the affected cluster, alleviating ballooning and swapping.