Re: [PATCH] sched/rt: RT_RUNTIME_GREED sched feature

[Steven Rostedt]

On Mon, 7 Nov 2016 12:22:21 -0600
Clark Williams <williams@xxxxxxxxxx> wrote:

> I'm still reviewing the patch, but I have to wonder why bother with making it a scheduler feature?
> 
> The SCHED_FIFO definition allows a fifo thread to starve others
> because a fifo task will run until it yields. Throttling was added as
> a safety valve to allow starved SCHED_OTHER tasks to get some cpu
> time.  Adding this unconditionally gets us a safety valve for
> throttling a badly written fifo task, but allows the fifo task to
> continue to consume cpu cycles if it's not starving anyone. 
> 
> Or am I missing something that's blazingly obvious?

Or I say make it the default. If people want the old behavior, they can
modify SCHED_FEATURES to do so.

-- Steve