Re: [patch 1/4] x86: FIFO ticket spinlocks

[Chuck Ebbert]

On 11/02/2007 07:01 PM, Nick Piggin wrote:
> 
> In the contended multi-threaded tight loop, the xchg lock is slower than inc
> lock but still beats the fair xadd lock, but that's only because it is
> just as unfair if not more so on this hardware (runtime difference of up to
> about 10%)
> 

I meant xchg for unlock, not lock.

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