The go tool trace utility is a tool for viewing trace files that can be generated in any one of the following three ways:
- Using the runtime/trace package
- Using the net/http/pprof package
- Executing the go test -trace command
This section will use the first technique only. The output of the following command will greatly help you to understand what the Go execution tracer does:
$ go doc runtime/trace
package trace // import "runtime/trace"
Package trace contains facilities for programs to generate traces for the Go
execution tracer.
Tracing runtime activities
The execution trace captures a wide range of execution events such as
goroutine creation/blocking/unblocking, syscall enter/exit/block, GC-related
events, ...
