Good morning!
I’ve been using Proxmox for many years now. Currently, I’m running an Intel 11400 CPU (12 threads) with 64GB of RAM—a rather modest setup (OPNsense, Paperless, Plex, Pi-hole, Joplin, and similar services, nothing too resource-intensive), but it works well for my small home lab. This isn’t the first machine I’ve used to host my services, and I fear it won’t be the last…
What’s the problem? I tend to get anxious when I see that the number of threads I have (12) equals the number of vCPUs I’ve allocated to my VMs. That’s when I start thinking about upgrading my processor.
I know, it’s probably an unfounded and somewhat silly concern. Every time I check my VMs, they are mostly idle. Sometimes, my firewall uses more resources when traffic is heavy—I’ve assigned it 4 vCPUs, and even then, it only reaches a maximum usage of about 40% in those moments.
Can anyone give me some advice on this? Right now, I have around 20 vCPUs assigned in total, and everything seems to be working fine. But when I see so many people in this group with powerful, high-thread-count processors, I start to feel a bit uneasy.
Best regards, and thanks in advance!
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I overprovision all my CPU’s on all of my proxmox nodes. I am cognizant of how many CPU threads each node has, and provision based on expected or observed load. For instance, I know that the node that Frigate exists on is going to use a lot more CPU than most other systems, so I limit what I have hosted on that same node. Outside of that, I know most of my loads are relatively light and I run into RAM constraints more than CPU constraints.