With this fight over spinlocks in Linux almost clear, now I want to know if @Jonathan_Blow used them in their games and if he knew about the performance hit
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Because if you go back and read the blog post in detail (which is kind of a waste of time, but if you are bored), the guy wrote literally a loop that does nothing but take clock samples and locks. In that scenario, it is _very likely_ the OS will swap you out in between!
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