https://issues.apache.org/bugzilla/show_bug.cgi?id=51953
--- Comment #11 from Francis Galiegue <fgalie...@gmail.com> 2011-10-05 12:51:19
UTC ---
This crude test using the following code shows indeed that the byte array based
implementation is indeed MUCH faster:
----
private static final int COUNT = 50000;
public static void main(final String[] args) throws UnknownHostException
{
final NetMask nm = new NetMask("22.3.25.8/24");
final NetMask2 nm2 = new NetMask2("22.3.25.8/24");
final InetAddress in1 = InetAddress.getByName("22.3.25.10"),
in2 = InetAddress.getByName("cf83::ef:13:1"),
in3 = InetAddress.getByName("12.143.110.1");
int i;
long start, end;
start = System.currentTimeMillis();
for (i = 0; i < COUNT; i++) {
nm.matches(in1);
nm.matches(in2);
nm.matches(in3);
}
end = System.currentTimeMillis();
System.out.println("impl1: " + (end - start));
start = System.currentTimeMillis();
for (i = 0; i < COUNT; i++) {
nm2.matches(in1);
nm2.matches(in2);
nm2.matches(in3);
}
end = System.currentTimeMillis();
System.out.println("impl2: " + (end - start));
}
----
Results:
----
impl1: 147
impl2: 11
----
So, it's definitely the byte-based class. I'll try and throw the string compare
into the mix and see how it fares for good measure.
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