Re: LWLock contention: I think I understand the problem

> It would seem, therefore, that lwlock.c's behavior of immediately
> granting the lock to released waiters is not such a good idea after all.
> Perhaps we should release waiters but NOT grant them the lock; when they
> get to run, they have to loop back, try to get the lock, and possibly go
> back to sleep if they fail.  This apparent waste of cycles is actually
> beneficial because it saves context swaps overall.

Another question:  Is there a way to release buffer locks without
aquiring the master lock?

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