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Users are reporting CPU related performance problems on the virtual machine Email-Prod throughout the day. The resource settings for the VM and the ESXi host the VM is running on are shown below: VM: Email-Prod vCPUs: 4 Memory: 96GB ESXi host: CPU: 2 x 8 Core Processors Memory: 128GB NUMA architecturE. 2 Nodes Which two options would alleviate the observed performance problem for Email-Prod? (Choose two.)
Correct Answer: B,C
Explanation/Reference: Explanation: B-) Memory You can change the amount of RAM that a VM will use like this memsize = "128" If you don't assign a value for memory VMware will use the default-setting which is 32MB memsize = "32" Whenever you assign RAM manually make sure the value is a multiple of 4 - otherwise the VM will not start: memsize = "255" causes this error-message: Memory size 255 not a multiple of 4 https://pubs.vmware.com/vsphere-60/index.jsp#com.vmware.vsphere.hostclient.doc/GUID-99E66B59- 53A8-42D0-A08F-17DBE7D4A864.html?resultof=%2522 C-) This is expected behavior based on the current architecture of the scheduler. However, these points help to limit the impact of the issue :Lower the number of vCPUs. From the example above, you would lower the number of vCPUs from 8 to 6 or less. If the virtual machines are sized such that they are a whole multiple or divisor of the NUMA node size, this helps with the number of virtual machines that you can power on. If 6 vCPU virtual machines are used, you can run up to at least 8 of those virtual machines (with 100% CPU utilization) without incurring substantial ready times. https://www.vmware.com/files/pdf/.../VMware-PerfBest-Practices-vSphere6-0.pdf