[go-nuts] GC hint for collection timing

[will....@gmail.com]

I recently recalled that someone in the Go Team—I forget who—said that the 
Go compiler slowed down a lot after converting from C to Go because the Go 
GC was freeing a lot of memory that the C code wasn't.

I wonder if an approach like that of memory regions 
(https://github.com/golang/go/discussions/70257) could be used to hint to 
the GC that memory allocated in a function doesn't need to be freed unless 
there is severe memory pressure.

For example (for lack of a better name):

func main() {
    runtime.DeferCollection(func() {
        runCommand()
    })
}

Will

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