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by bbatha 1909 days ago
Go has only concurrency of the features you talk about but is often competitive with Java in benchmarks. In my experience I’ll take administration of go processes any day of the week over Java — I’ve lost count of the number of hours lost to debugging gc stalls, runaway heaps and other garbage collector related issues never once had those problems in go.

Go even reverted a generational collector because it had no performance benefits since most generational objects would be stack allocated anyway — Julia’s JIT and way more advanced llvm backend should do even better than go in keeping objects stack local and inline.
1 comments
pron 1909 days ago
It's competitive in pretty forgiving benchmarks. And LLVM is way more advanced than Go's compiler, but not OpenJDK's. I'm not saying you have to prefer Java to Go, but its throughput is better. As to the stack-allocation claim, young generations might be hundreds of MBs; that might correspond to the stacks of 100K goroutines on some server workloads, but not of a few threads.

So I'm not saying you must prefer Java to Go (even though GC tuning is a thing of the past as of JDK 15 or 16), or that Go's performance isn't adequate for many reasonable workloads, only that 1. a flatter object landscape might still not match Java's memory management performance without sophisticated GCs, and 2. I wouldn't extrapolate from Go to Julia, as they are languages targeting very different workloads. E.g. Julia might well prefer higher throughput over lower latency, and Go's GC's throughput is not great.

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snovv_crash 1909 days ago
Having a Lamborghini racing a Toyota Corolla is of course going to show the Lambo winning. But if I need to maintain a fleet of them to move 1000 passengers around a city with certain availability guarantees, I'm going with the Toyotas every time.
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pjmlp 1909 days ago
Likewise if I do races for living I am picking the Lamborghini.
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snovv_crash 1908 days ago
But Java isn't a Lamborghini exactly, is it? It just has the maintenance issues of one.
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pjmlp 1908 days ago
When compared with Go it certainly is, across all axes.

Then there are a couple of McLaren, Lotus and F1, but then it is another level altogether.

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