go test -bench=. -benchmem -cpuprofile=cpu.out -memprofile=mem.out -x .
go tool pprof 13_pprof_console.test cpu.out
list Slow
list Fast

go tool pprof 13_pprof_console.test mem.out
alloc_objects
alloc_space
inuse_objects
inuse_space
list Slow
list Fast
