i did some maintenance on a server and found several processors go from non-intr to online.
my question is what is the true benefit of placing a processor into non-intr state?
You can then dedicate it running processes. Without this, you could give a very important process a great priority so it could not be interrupted by other processes, and even lock it into its own cpu, but the cpu might still service interrupts. Now you can truely give a process its own cpu. I have never done this, so I can't comment on how much benefit you actually get.
yea... the basic idea behind it i understand. makes sense but i was looking more from an app developers point of view. i see with the use of psrset you bind it to a pid. seems like this can get very ugly if done incorrectly. possibly seriously slow a server down... interested to hear what people have to say. 