Re: [PATCH 6/6] sched: disabled rt-bandwidth by default

Linus Torvalds
2008-08-28T18:43:32Z

On Thu, 28 Aug 2008, Mark Hounschell wrote:
>
> More and more are wanting and now finding the Linux kernel to be more
> RT capable. I seem to remember way back you saying it was one thing you didn't
> really care much about one way or the other. Thats OK. But, you _are_ the man.

The thing is, the reason I dislike RT is that so many people have so
different understanding of what RT means.

Quite frankly, I think that the people who are complaining (like you)
think that RT means "hard realtime". You think about literally specialized
devices.

A lot of _other_ people think that RT means "good audio latency", where it
really is a lot softer.

And neither camp seems to ever admit that they are just a small camp, and
that the other camp exists or is even valid.

And I'm not really interested. Quite frankly, I suspect the "we want to
run something like pulseaudio with RT priorities" camp is the more common
one, and in that context I understand limiting SCHED_FIFO sounds perfectly
understandable.

As to your

> "just to protect a few _supposedly_ bad programmers???"

quite frankly, most programmers aren't "supposedly bad". And if you think
that the hard-RT "real man" programmers aren't bad, I really have nothing
to say.

Linus