Change qemu priority

[adolfotregosa]

Hi! I'm really sorry to bother you guys but I'm hopping someone could help me on this.

How can I automagically make my VMs "qemu-system" process start always with my set priority, like realtime priority ??

 

I always have to do this on the terminal

sysctl -w kernel.sched_rt_runtime_us=-1 , after a server reboot

and then

chrt -f -p 99 $QEMUPID after I start my VM.

 

Any way this could be more manegable ??

 

I have attached a print showing why I want this and I know why the latency is that bad, I'm provoking it, but I would still like to be able to do it.

 

Thank you very much.

[Jerky_san]

Renice -20 -p

 

The -20 is the highest priority possible. After -p is process id. It's what I do but others might know better

[adolfotregosa]

For me adjusting the niceness does nothing, only chrt. 

I'm looking for an automatic way of doing it.