[atVelocet]

If you ever plan to use any of these older PCs: Disable Spectre and Meltdown mitigations! As a bonus you should also remove CPU microcodes from the BIOS/UEFI and make sure that no microcode is loaded via software.

The performance gain is huge if done correctly. There is no need for these mitigations on homelabs.

[unique_parrot2]

You made me try this, my cpu went from 16% to 9% on my proxmox-box running a home-assistant vm and a few lxcs. Thanks for your post.

[ishanjain28]

This is an excellent advice! I did that on a few of my machines few months back to reduce heat, power consumption.

[kayson]

Any guides on how to do this?

[jki275]

Usually it's just a bios option you can turn off.