Question: How to set the smp_affinity of a specific interrupt?

[teodorkostov]

I would like to set the smp_affinity of the network card (eth0) interrupts on a specifi core (let's say 0). Further more I would like to specify the affinity of a few network related services (e.g. sshd) to the same core.

How can I configure with tuned the affinity of a single interrupt?
Does tuned have a way to manage the affinity of other services?

PS: The kernel command line irqaffinity narrows down the cores where the interrupts happen. However, I would like to have more detailed control for specific interrupts.

[yarda]

AFAIK there is currently no support for this in the TuneD engine, but we would definitely accept related PRs. It sounds like useful feature.

As a workaround if you want to control this via TuneD profiles, you could create bash script that is executed by the [script] TuneD plugin and control it manually there via echo > /proc/irq/.../smp_affinity.