https://golang.org/pkg/net/http/pprof/
--https://github.com/uber-archive/go-torch (already included from Go1.11)
Video
GopherCon 2019: Dave Cheney - Two Go Programs, Three Different Profiling Techniques https://youtu.be/nok0aYiGiYA
--Profiling and Optimizing Go (although old) https://youtu.be/N3PWzBeLX2M