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MattHumphreys
Contributor
Contributor

Virtual Machine Ballooning/Contention/Swap on host with available memory

We had an issue with one of our virtual machines and on investigate in VROPS and log insight we have identified that there was memory compression, a spike in demand and a balloon on the VM as below

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However on the host we can see that there is available resource to handle the request without triggering the above balloon/compress etc

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We cant seem to figure out why the VM has ballooning and compression when the host appears to have available capacity in itself.

Any suggestions on what other metrics to look at or where we can investigate further to try and point us to the root cause of this?

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daphnissov
Immortal
Immortal

Check this VM and see if it has a memory limit applied. Also check if it's in a resource pool what those settings are.

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MattHumphreys
Contributor
Contributor

No memory limit and no resource pool for this VM, it is just in a folder, I have checked for any advanced settings, the memory is unlimited with a 0MB reservation and normal shares.

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