Do the packages 'irqbalance' and 'kmod-irqbypass' accomplish the same thing? I'm setting up a new OpenWRT install on x86-64 and I'm trying to understand if I need both installed.
irqbalance package will help balance interrupts to multiple cores, so the workload is more evenly distributed instead of hitting a single core. See /proc/interrupts to get an idea of how balanced it currently is or isn't.
For irqbypass, it seems to be related to virtualization and passing physical devices via VFIO. See: https://lwn.net/Articles/653706/
You might also want to benchmark irqbalance versus "Packet Steering", if you're gonna be pushing so much traffic through your interfaces that you're CPU bound.
2 Likes
Thanks for the response and the links.
When you reference the "packet steering" are you referring to 'software flow offloading' option?