June 16, 2003
In my recent JavaScript performance epiphany, I realized just how bad JScript performance can be. I thought I had two options: choose a better language, or resign myself to being a couple of years behind the Moore's Law curve.
There's a third way, and it's interesting enough to tell. .NET. Watch out: I think I just took the red pill.
Thus far, I've managed to avoid the wonders of .NET; I did install the runtime, and even the IDE, but never worked with it in earnest.
The .NET framework includes "JScript.NET": a (fairly complete) implementation of ECMAScript on the .NET common-language runtime. And if you just install the runtime, you do get the compiler. Still the ugly duckling, but it's way faster than the old cscript/wscript.
My anagrams code now runs in 7 seconds. And the arraytest code stressing "for(key in table)" is very dramatically improved:
| Runs | Array Size | sum1() ms | sum2() ms |
|---|---|---|---|
| 10000 | 100 | 5298 | 7821 |
| 1000 | 1000 | 8052 | 8542 |
| 100 | 10000 | 8012 | 12427 |
| 10 | 100000 | 10185 | 15923 |
| 1 | 1000000 | 11747 | 27810 |
Maybe this really is the best of all worlds: a dynamic language, compiled, with a rich class library compatible across environments. That class library is the learning curve ahead; now, there's no chasm to cross before I start climbing.
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see also:
{groove:
[ ray,
matt,
paresh,
mike,
jeff,
john ],
other:
[ /* more blogroll to follow */ ]
}
The views expressed on this weblog are mine alone and do not necessarily reflect the views of my employer.
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