Module 9: Resource Monitoring Lesson 3: Monitoring Resource Usage Flashcards
(14 cards)
What allows you to access key host statistics in a guest virtual machine?
The Perfmon DLL included with VMware Tools
What does Perfmon allow you to view?
Actual CPU and memory use alongside observed CPU and memory use of the guest operating system
What additional counters does VMware Tools include for Perfmon? (two)
VM Processor and VM Memory
What is CPU ready time?
The interval when a virtual machine is ready to execute instructions but cannot
What does it mean when a virtual machine experiences ballooning activity and the guest operating system is swapping?
The virtual machine is constrained for memory
What is host active memory counter?
The amount of physical memory that is actively being used by virtual machines and the VMkernel
In regards to storage monitoring, what can throughput and latency be viewed for?
Datastore, a storage adapter, or storage path.
Storage adapter charts are available only for ______ ______storage.
Storage adapter charts are available only for Fiber Channel storage.
The storage path charts are available for ______ ______ and ______ storage, not ______
The storage path charts are available for Fiber Channel and iSCSI storage, not NFS.
In regards to storage monitoring, what is Kernel command latency?
The average amount of time, in milliseconds, that the VMkernel spends processing each iSCSI command
For best performance, what value should Kernel Command latency be?
0-1 milliseconds
In regards to storage monitoring, what is Physical device command latency?
The average amount of time, in milliseconds, for the physical device to complete a SCSI command
What number, in milliseconds, indicates that the storage array might be slow or overworked?
15 miliseconds
How can you determine whether or not network packets are being dropped?
Use the advanced performance charts to examine the droppedTx and droppedRX network counters of a virtual machine
