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SubjectRe: BKL removal
On Sun, Jul 07, 2002 at 11:06:32PM -0400, Alexander Viro wrote:
> The thing being, if you are already contended you are playing "I'll release
> CPU now" vs. "I'll spin in hope that contender will go away right now".
> IOW, it's a win only if you get contention often and for short intervals.
> Which is a very good indication that something is rotten with your locking
> scheme. Like, say it, having lost the control over the amount of locks
> as the result of brainde^Woverenthusiastic belief that fine-grained ==
> good. With everything that follows from that...

So let's get some numbers. It really shouldn't be hard to make our
current semaphores spin a little before they sleep. If we get some
numbers showing it does help then either we need this change in mainline
or we need to fix our locking.

Revolutions do not require corporate support.
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