Messages in this thread | | | Date | Mon, 18 Jul 2005 20:31:32 -0700 | Subject | Re: RT and XFS | From | Bill Huey (hui) <> |
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On Fri, Jul 15, 2005 at 09:16:55AM -0700, Daniel Walker wrote: > I don't agree with that. But of course I'm always speaking from a real > time perspective . PI is expensive , but it won't always be. However, no > one is forcing PI on anyone, even if I think it's good ..
It depends on what kind of PI under specific circumstances. In the general kernel, it's really to be avoided at all costs since it's masking a general contention problem at those places. In a formally provable worst case system using priority ceiling emulation and stuff, PI really valuable. How a system like the Linux kernel fits into that is a totally different story. General purpose kernels using general purpose facilities don't.
That's how I see it.
bill
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