Originally posted by Groovy:
I still wonder why top doesn't have an option though...
i think maybe its because the nice value doesnt affect OSX as much as the nice value affects, linux for example.
on linux if you set a process to -20 it gets realtime priority, in OSX realtime priority is way "lower" then -20. i think its the same the other way around too, +19 on a linux system is "nicer" to other processes then +19 is on OSX.
if you want realtime priority in OSX i think you need to set it from inside the app needing it, using some MACH system call.