Kengo NAKAHARA <k-nakah...@iij.ad.jp> wrote: > The implementation is consist of following three pathes: > <...> > (2) new kernfs file to show interrupt numbers per cpu > "vmstat -i" cannot show interrupt numbers per cpu. So I > implement new kernfs file to show per cpu. The usage is "cat > /kern/interrupts". For example, we can see below output > which is like linux's /proc/interrupts > ==================== > IRQ CPU#00 CPU#01 > 1 0* 0 > 3 0* 0 > 4 0* 0 > 6 0* 0 > 7 0* 0 > 9 0* 0 > 12 0* 0 > 14 0* 0 > 15 0* 0 > 16 108* 0 > 17 1193055* 0 > 18 680358 150* > ==================== > "*" mean the cpu is routed the IRQ number interrupts. > > https://github.com/knakahara/netbsd-src/commit/dc7c17dd2f0cd78a03983849feb8fdd8cbe0d9c6
Agree with Martin that vmstat -i could grow per-CPU counters, but it might be a bit more work than you want to do. So, up to you. :) > <...> > > Above implementation works well, but I think the UI is not so good. > So, I am going to implement new command intrctl(8). The usage is consist > of below two sub command. > (A) "intrctl list" > This sub command show interrupt numbers per cpu (like > /kern/interrupts). > > (B) "intrctl -i 18 -c 1" > This sub command let interrupts route other cpu. "18" is IRQ > number, "1" is cpuid (like "sysctl -w kern.cpu_affinity.irq=18:1"). > > Could you comment which UI is good, current "sysctl and /kern/interrupts" > or new "intrctl"? I do not really like /kern/interrupts. intrctl(8) seems like a good interface. Note that cpuctl(8) has intr/nointr commands which are not enabled at this moment. They should move to intrctl(8). -- Mindaugas