CPU Overcommitment

While I know there are a 1000 blog posts out there talking about CPU overcommitment, I felt compelled to write my own following a conversation I had recently. Me: “I’ve noticed you’re running 6.25:1 overcommitment ratio. Have you looked into how your VMs are performing recently? Customer: “No, the hosts CPU doesn’t look busy and

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Memory Contention & Unswap

In a proof of concept environment i am currently working in we have an issue with significant over-commitment of resource. Memory is currently around 3:1. Because of this we are seeing workloads often hitting 100% with demand significantly higher: During these periods, we can see VMs were seeing significant memory contention % sometimes exceeding 80%.

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