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You're not being clear - are you claiming that they do scale well on ARM/PPC, despite the "absolute worst" implementation or that they don't?
by ghusbands 3y ago
You're not being clear - are you claiming that they do scale well on ARM/PPC, despite the "absolute worst" implementation or that they don't?
- bonzini 3y agoHe means that locks anyway have the same problems as atomics on platforms with load locked/store conditional. Therefore yes, that's a problem of the platform, but even on arm/ppc atomics scale better than locks. Which is true, but eliminating sharing works even better if possible as proved by the article.