2V0-622 · Question #159
An administrator is troubleshooting a CPU performance issue for a virtual machine. Which three esxtop counters may demonstrate CPU contention? (Choose three.)
The correct answer is A. %RDY C. %MLMTD E. %CSTP. In esxtop, CPU contention is specifically indicated by counters that show a VM is waiting for or being denied access to physical CPU cycles, not simply consuming them.
Question
An administrator is troubleshooting a CPU performance issue for a virtual machine. Which three esxtop counters may demonstrate CPU contention? (Choose three.)
Options
- A%RDY
- B%RUN
- C%MLMTD
- D%WAIT
- E%CSTP
How the community answered
(52 responses)- A90% (47)
- B4% (2)
- D6% (3)
Why each option
In esxtop, CPU contention is specifically indicated by counters that show a VM is waiting for or being denied access to physical CPU cycles, not simply consuming them.
%RDY (Ready) indicates the percentage of time a vCPU was ready to run but could not be scheduled on a physical CPU due to contention.
%RUN shows the percentage of time a vCPU is actively executing on a physical CPU core, which indicates utilization rather than contention or starvation.
%MLMTD indicates the VM is being throttled by a configured CPU limit, meaning it cannot use additional CPU cycles even when they are available.
%WAIT measures time a vCPU is idle waiting for I/O or an event such as a halt instruction, which reflects the guest OS being idle rather than CPU resource contention.
%CSTP (Co-Stop) appears on SMP VMs when some vCPUs are forced to pause and wait for co-scheduled sibling vCPUs, directly indicating SMP scheduling contention.
Concept tested: esxtop CPU contention counter identification
Source: https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.monitoring.doc/GUID-A31249BF-B5DC-455B-AFC7-7D0BBD6E37B6.html
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