After coming close to running out of resources last week and having to re-purpose another device turning it into a 3rd Proxmox node, it got me thinking about how easily ZFS ARC cache and VM overhead sneak up on you.
So, I built a basic tool for rough guidance.
It calculates vCPU overcommit ratios and RAM allocation locally in your browser. Just pure client-side math so you don’t accidentally OOM your hypervisor like I almost did. Inputs stay right in your browser and aren’t saved anywhere.
Feedback or sanity checks on the math are welcome.
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