Is there some technical reason for why you can’t specify CPU-priority for VMs, or is it just that no one has implemented the feature?
Most hypervisor-platforms allow you to do that for VMs, including KVM, and I wish I had the option with LXD as well. I just thought to ask, if a technical reason is preventing that from being implemented.
Do you mean the nice value of the QEMU processes?
If setting the nice value of the QEMU-process is enough to achieve that effect, then sure – I wouldn’t know, I’ve never tried doing that – , though it’d make sense (at least to me) to be able to set that the same way as CPU-priority is set for containers, ie. via the limits.cpu.priority setting both so that one doesn’t have to manage it manually outside of LXD and for consistency.
Just didn’t get around to it. Having limits.cpu.priority expand to process niceness would make sense.