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2V0-622 · Question #357

What counter should an administrator check to determine if a virtual machine is ballooning?

The correct answer is D. vmmemctl. https://docs.vmware.com/en/VMware-vSphere/6.5/com.vmware.vsphere.monitoring.doc/GUID- 88CA95AD-A583-4EF6-838E-D92C87B0BB00.html Memory Ballooning is the memory reclamation technique used by hypervisor to reclaim the memory back from the virtual machine. When ESXi host running low

Section 7 – Administer and Analyze vSphere 6.5 Performance

Question

What counter should an administrator check to determine if a virtual machine is ballooning?

Options

  • AswapinRate
  • Bvmmemctltarget
  • Cswapped
  • Dvmmemctl

How the community answered

(27 responses)
  • A
    4% (1)
  • C
    7% (2)
  • D
    89% (24)

Explanation

https://docs.vmware.com/en/VMware-vSphere/6.5/com.vmware.vsphere.monitoring.doc/GUID- 88CA95AD-A583-4EF6-838E-D92C87B0BB00.html Memory Ballooning is the memory reclamation technique used by hypervisor to reclaim the memory back from the virtual machine. When ESXi host running low on physical memory, It uses ballooning driver (vmmemctl.sys) to determine the how much memory from virtual machines can be get back to prevent the hypervisor swapping. “MEMCTL/MB” counter shows us the overall ballooning activity.

Topics

#memory ballooning#vmmemctl#performance counters#memory management

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