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Hinrik 6 hours ago

Layperson here: what is special about Go's runtime, aside from the GC?

djha-skin 5 hours ago | parent | next [-]

Chief design goals were radically easy concurrency and speed of compilation.

minraws 5 hours ago | parent [-]

Speed of compilation feels like a distant second in terms of goals given the weird new generic features they keep adding..

I was fine with basic generics they complicated it quite a bit much for my liking.

ameliaquining 3 hours ago | parent [-]

What weird new generic features? Generic type aliases? Those aren't very complicated.

vips7L 4 hours ago | parent | prev | next [-]

Is the Go GC that special? Is it even generational yet?

silisili 4 hours ago | parent [-]

I'm not sure it would ever make sense to be. That makes the assumption tons of allocations get made that don't live long, which was(maybe is still?) more common in some languages. Go is more aggressive about not heap allocating, and has tools to help you avoid them.

fnord77 6 hours ago | parent | prev | next [-]

Goroutines?

onlyrealcuzzo 6 hours ago | parent | prev [-]

It's literally the most sophisticated scheduling engine in the world.

In practice, Go can typically outperform Rust in throughput (using more memory), despite having a mountain of disadvantages against it in theory.

That's how good the Go scheduler/runtime is.

Aurornis 6 hours ago | parent | next [-]

> n practice, Go can typically outperform Rust in throughput (using more memory), despite having a mountain of disadvantages against it in theory

This is a huge claim that disagrees with both my real-world experience and everything I've seen from artificial comparisons.

Every high performance Go system I've worked on has quickly reached the point where we're optimizing memory management and doing things that would have been explicit in a non-GC language like Rust anyway.

The Go runtime is amazingly optimized, but it comes with overhead over doing the same work directly in a lower level language.

jcgl 6 hours ago | parent | prev | next [-]

This is the first I've heard anyone claim higher throughput for Go than Rust. Any articles you'd point to to learn more?

insanitybit 5 hours ago | parent [-]

I think one of the few performance benefits with a GC is that you can defer allocations. You can do that in Rust too though.

jandrewrogers 6 hours ago | parent | prev | next [-]

> It's literally the most sophisticated scheduling engine in the world.

That seems unlikely regardless of how good it is. This is a domain where state-of-the-art research is not in the public literature. Scheduling is an AI-complete problem.

insanitybit 5 hours ago | parent | prev | next [-]

I think this is interesting and warrants explanation. There are cases where a GC can be faster (sort of, Arenas get you most of the gains) but "the most sophisticated scheduling engine in the world" should be easy to at least partially support.

zacmps 5 hours ago | parent | prev | next [-]

What benchmarks are you referring to?

Rust itself doesn't have a scheduler of course, I assume this is comparing against tokio or one of the other async executors?

6 hours ago | parent | prev | next [-]
[deleted]
pjmlp 5 hours ago | parent | prev [-]

What a joke, ignoring Erlang, and the custom schedulers from JVM and CLR runtimes.

dnautics 4 hours ago | parent [-]

Erlang's scheduler is not sophisticated, which is what makes it AWESOME.

but yeah. i would be surprised if the JVM's scheduler is not more sophisticated than go's if for no other reason than it has way more knobs you can tune. you know they put that knob in there because someone (probably Google cough cough) asked for it