Which three metrics are checked to diagnose a memory bottleneck at the ESXi host level?

A company runs several instances of an application that requires large amounts of memory. Which three metrics are checked to diagnose a memory bottleneck at the ESXi host level? (Choose three)

A.
MEMSZ

B.
MEMCTL

C.
SWAP

D.
ZIP

E.
MCTLTGT

Explanation:

THIS IS A HIGHLY DEBATED QUESTION – SOOoooo If you think it is wrong please research thoroughly before requesting an update… an official response from VMware would be nice. 😀

3 metrics to diagnose a memory bottleneck at the ESXi host level: MEMSZ, MEMCTL, SWAP.

Page 52,53 of vsphere-esxi-vcenter-server-50-monitoring-performance-guide.pdf

MEMSZ (MB) Amount of physical memory allocated to a resource pool or virtual machine.
MEMCTL (MB) Displays the memory balloon statistics. All numbers are in megabytes.
SWAP (MB) Displays the ESXi swap usage statistics. All numbers are in megabytes. (When the VMkernel on the host is swapping memory to disk).
ZIP (MB) Displays the ESXi memory compression statistics. All numbers are in megabytes.
MCTLTGT (MB) Amount of physical memory the ESXi system attempts to reclaim from the resource pool or virtual machine by way of ballooning.

Revised; Answer is MEMSZ,MEMCTL,SWAP. Checked with VMWARE on this. Renegade_ZA

3 Comments on “Which three metrics are checked to diagnose a memory bottleneck at the ESXi host level?

  1. Celembribor says:

    The question is “Which three metrics are checked to diagnose a memory bottleneck at the ESXi host level?” Answer is MEMCTL, SWAP and ZIP – all are for memory management improvement and are used when a memory bottleneck appear at the ESXi host level. MEMSZ is about configuration and MCTLTGT is about resource allocation.

  2. Satheesh says:

    Yes. Once we check MEMCTL, SWAP and ZIP, then at the 2nd level, we can check MCTLIGT and MEMSZ and decide. I agree to Celembribor.


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