Too Long; Didn't Read
Go is a programming language often used for applications in which performance matters. You need to have insights about your code performance and bottlenecks to be able to optimize it efficiently. Go comes with built-in support for profiling. Dave Cheney has developed a package named "premium-prof" to make profiling easy as pie. Go: The Complete Guide to Profiling Your Code. Get the details on how to get a profile in your code and how to download live profiles from the package.