If the Everything Coosely Coupled Architecture is the wave of the future, then Scripting would be an extremely important feature.  I've previously blogged about the inadequacies of M******* VM with running dynamic typed languages. However how well will it do interpreting a scripting language?

I picked up the benchmark from this javaworld article, and ran it using the respective Javascript implementations.  Here's the code:

function allocMatrix(howmany) {

var intArray = new Array(howmany);

for (var i = 1; i <= howmany; i++) {

var intArray2 = new Array(howmany);

intArray[i] = intArray2;

for (var j = 1; j <= howmany; j++) {

intArray2[j] = i;

}

}

}

function allocArray(howmany) {

var intArray = new Array(howmany);

for (var i = 1; i <= howmany; i++) {

intArray[i] = i;

}

}

function compare(howmany, value) {

for (var i = 0; i <= howmany; i++) {

if (i == value) {

print("found = " + i);

} 

}

}

var bench = 1000000;

var start = new Date().getTime();

print("allocating and initializing a " + bench + " element array...");

allocArray(bench);

var end = new Date().getTime();

print( end - start );

start = new Date().getTime();

print("allocating and initializing a " + bench + "x" + bench + " element matrix...");

allocMatrix(500);

end = new Date().getTime();

print( end - start );

start = new Date().getTime();

bench = 1000000;

print("comparing an int against " + bench + " others...");

compare (bench, bench - 1);

end = new Date().getTime();

print( end - start );

 

Here are the results:

H:\\java\\scripting\\Rhino>java -jar js.jar -f countnet.js

allocating and initializing a 1000000 element array...

3532

allocating and initializing a 1000000x1000000 element matrix...

187

comparing an int against 1000000 others...

found = 999999

297

H:\\java\\scripting\\Rhino>jsc countnet.js

M******* JS****t .*** Compiler version 7.00.9466



H:\\java\\scripting\\Rhino>countnet

allocating and initializing a 1000000 element array...

10157

allocating and initializing a 1000000x1000000 element matrix...

1485

comparing an int against 1000000 others...

found = 999999

906

Okay, so running Javascript using the Java VM is at least 3 times faster than the competition. No surprise here, furthermore, Rhino compiles source on the fly and doesn't leak unlike the competitor.