Graphical profilers are really helpful for identifying hot spots in your code, and in my experience usually lead to a between 2-5x improvement in performance ju

Graphical profilers are really helpful for identifying hot spots in your code, and in my experience usually lead to a between 2-5x improvement in performance just by identifying allocator pressure and algorithmic issues. Go may be an annoying language, but its graphical profiler is great! Xcode's profiler tools are pretty nice as well.