2V0-21.23 Question 302
Single answerA VMware administrator notices that a critical application running on a virtual machine (VM) is experiencing performance issues after a recent upgrade to vSphere 8.x. The VM is configured with 8 vCPUs and 64 GB of memory. Upon investigation, the administrator identifies high CPU Ready values on the VM. What action should the administrator take to resolve the issue?
- A
Reduce the number of vCPUs assigned to the virtual machine.
- B
Increase the memory allocated to the virtual machine.
- C
Move the virtual machine to a host with fewer running workloads.
- D
Enable CPU Hot Add on the virtual machine.
Show answer and explanation
Correct answer: C
Explanation
High CPU Ready values indicate that the virtual machine is waiting for physical CPU resources to become available on the host. This often occurs when the host is overcommitted in terms of CPU resources. Moving the VM to a host with fewer workloads reduces contention for CPU resources, leading to lower CPU Ready values and better performance.
- A. Incorrect.
Reducing the number of vCPUs might help if the VM is over-provisioned, but high CPU Ready values generally indicate contention at the host level, not an issue with the VM's configuration.
- B. Incorrect.
Increasing the memory allocation will not address CPU Ready values, as this issue is related to CPU scheduling rather than memory availability.
- C. Correct.
Moving the virtual machine to a host with fewer running workloads can reduce CPU contention and lower CPU Ready values, improving the VM's performance.
- D. Incorrect.
Enabling CPU Hot Add allows for dynamic addition of CPUs but does not directly address CPU Ready values or contention issues at the host level.