[cpp] [hl] Slow performance of trace command

sebthom commented 5 years ago

The following code runs significantly slower on HL and CPP compared to other targets:

class TraceTest {

    public static function main() {
        var start = haxe.Timer.stamp();
        for (i in 1...2000)
            trace(i);
        var duration =  Math.round((haxe.Timer.stamp() - start)*100) / 100;
        trace('Duration: $duration seconds.');
    }
}

I tested Haxe 4RC5 on Windows 10, these are my results:

Target	Duration
CPP	18.73 secs
HL 1.10	10.5 secs
PHP5	0.88 secs
Java8	0.85 secs
Node.js 10.16	0.65 secs
C#	0.51secs
PHP7	0.51 secs
Neko2.2	0.49 secs
Python3.7	0.45 secs

Aurel300 commented 5 years ago

Might have something to do with flushing stdout maybe?

ncannasse commented 5 years ago

Yes, HL will flush stdout on every print, maybe we could only do that when debugger is enabled

sebthom commented 2 years ago

Yes, HL will flush stdout on every print, maybe we could only do that when debugger is enabled

@ncannasse The issue is still present in Haxe 4.2.5 and HL 1.1.2. Do you think you could implement your suggestion?

HaxeFoundation / haxe

[cpp] [hl] Slow performance of trace command #8830