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Linux: Volatile Performance

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In the continuining discussion about how GCC treats the volatile keyword, Linus Torvalds noted, "I just have a strong suspicion that 'volatile' performance is so low down the list of any C compiler persons interest, that it's never going to happen. And quite frankly, I cannot blame the gcc guys for it."

He went on to explain, "that's especially as 'volatile' really isn't a very good feature of the C language, and is likely to get *less* interesting rather than more (as user space starts to be more and more threaded, 'volatile' gets less and less useful."

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