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Easily retrieve VM memory overhead using the vSphere 6.0 API

01.29.2016 by William Lam // 1 Comment

A handy API that was introduced in vSphere 6.0 is the ability to easily retrieve the amount of memory overhead for a given Virtual Machine. Though this was not a common task, it was not trivial to find and often required customers to scoure the various VM logs. In vSphere 6.0, we now have a module called the Overhead Memory Manager which provides a very simple API method called the LookupVmOverheadMemory() to retrieve this information. I know this question has come up from time to time and I figure I do a quick blog about it as I have not seen anyone write about this API yet.

I have created example implementation using PowerCLI to exercise this API which I have called Get-VMMemovehead.ps1 Once the method is loaded, you pipe the output of the Get-VM cmdlet to this new operation as seen in the screenshot below:

Get-VM "vcenter60-2" | Get-VMMemOverhead

vm-memory-overhead

Categories // Automation, vSphere 6.0 Tags // memory overhead, vSphere 6.0, vSphere API

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William is Distinguished Platform Engineering Architect in the VMware Cloud Foundation (VCF) Division at Broadcom. His primary focus is helping customers and partners build, run and operate a modern Private Cloud using the VMware Cloud Foundation (VCF) platform.

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