title: ARM atomics performance
body: <p>I am running the same code on an Intel CPU and an ARM CPU (Mac/iOS, compiler: Clang). By profiling the application, I noticed, that on iOS/ARM the atomic operations are the top 3 items, while on Intel, they are not even in the top 10. Is that true, that on ARM atomic operations are <em>that much</em> slower? (relatively of course)</p>