I am convinced that GC can cause issues with object lifetimes and pauses (at least without a pauseless GC). Like sanjoy points out though: https://news.ycombin

I am convinced that GC can cause issues with object lifetimes and pauses (at least without a pauseless GC). Like sanjoy points out though: https://news.ycombinator.com/item?id=9856234 https://news.ycombinator.com/item?id=9856234 RC could involve atomic increment/decrement. I haven't seen any macro benchmarks about ARC performance vs manual memory management and/or GC. I've seen anecdotes like http://stackoverflow.com/questions/12527286/are-there-any-concrete-study-of-the-performance-impact-of-using-arc http://stackoverflow.com/questions/12527286/are-there-any-co... or microbenchmarks (from the same page) but nothing at a larger scale.