Re: scalability of signal delivery for Posix Threads

[Matthew Wilcox <matthew@wil.cx>]

On Mon, Nov 22, 2004 at 09:51:15AM -0600, Ray Bryant wrote:
> Since signals are sent much more often than sigaction() is called, it would
> seem to make more sense to make sigaction() take a heavier weight lock of
> some kind (to update the signal handler decription) and to have the signal
> delivery mechanism take a lighter weight lock.  Making 
> current->sighand->siglock a rwlock_t really doesn't improve the situation
> much, since cache line contention is just a severe in that case (if not 
> worse) than it is with the current definition.

What about RCU or seqlock?

-- 
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