Re: Nice 19 process still gets some CPU

[Timothy Miller]

Con Kolivas wrote:

> It definitely should _not_ starve. That is the unixy way of doing
> things. Everything must go forward. Around 5% cpu for nice 19 sounds
> just right. If you want scheduling only when there's spare cpu cycles
> you need a sched batch(idle) implementation.

Well, since I can't rewrite the app, I can't make it sched batch.  Nice 
values are an easy thing to get at for anything that's running.

Besides, comparing nice 0 to nice 19, I'd expect something more like a 
100:1 ratio or worse.  (That is, I don't expect nice to be linear.)

Maybe this is just me, but when I set a process to the worst possible 
priority (nice 19), I expect it only to run when nothing else needs the CPU.

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