Simple web server benchmark - vibe.d is slower than node.js and Go?

[Vadim Lopatin]

On Thursday, 21 September 2017 at 18:49:00 UTC, bitwise wrote:
> On Thursday, 21 September 2017 at 08:01:23 UTC, Vadim Lopatin 
> wrote:
>> There is a simple set of simple web server apps written in 
>> several languages (Go, Rust, Scala, Node-js):
>>
>> https://github.com/nuald/simple-web-benchmark
>>
>> I've sent PR to include D benchmark (vibe.d).
>>
>> I was hoping it could show performance at least not worse than 
>> other languages.
>> But it appears to be slower than Go and even Node.js
>>
>> Are there any tips to achieve better performance in this test?
>>
>> Under windows, I can get vibe.d configured to use libevent to 
>> show results comparable with Go. With other configurations, it 
>> works two times slower.
>>
>> Under linux, vibe.d shows 45K requests/seconds, and Go - 50K. 
>> The only advantage of D here is CPU load - 90% vs 120% in Go.
>>
>> I'm using DMD. Probably, ldc could speed up it a bit.
>>
>> Probably, it's caused by single threaded async implementation 
>> while other languages are using parallel handling of requests?
>
> Doesn't vibe-d use Fibers?
>
> I tried to build a simple web server with a fiber-based 
> approach once - it was horribly slow.
>
> I hope C# (and soon C++) style stackless resumable functions 
> will eventually come to D.

It does. But Golang uses them, too. Goroutines.