The Go Blog The runtime/trace package contains a powerful tool for understanding and troubleshooting Go programs. The functionality within allows one to produce a trace of each goroutine’s execution over some time period. With the go tool trace command (or the excellent open source gotraceui tool), one may then visualize and explore the data within these traces. The magic of a trace is that it can easily reveal things about a program that are hard to see in other ways. For example, a concurrency...