I want to profile my test application started by IntelliJ. For profiling I use VisualVM.
I started the Java tool with the parameter -J-Dorg.netbeans.profiler.separateConsole=true.
I started the application with the VM parameter -Xverify:none, otherwise VisualVM throws an error if I start profiling (Redefinition failed with error 62).
I want to profile my application before any important code has been executed, so I tried to set a break point and start profiling in VisualVM. The problem is that VisualVM doesn't respond to any interaction while I'm waiting at my break point. Do I miss something?
In normal execution (without debugging) my program waits for input, so I can profile it without debugging. But what if a program doesn't has such "waiting points"?
My test application looks like that:
package my.visualvm.example;
import java.util.Scanner;
public class MainClass {
public static void main(String[] args) {
System.out.println("Starting Application: " + MainClass.class.getSimpleName());
Scanner scanner = new Scanner(System.in);
while (scanner.hasNext()) {
double value = scanner.nextDouble();
if (value == 0d) {
break;
}
System.out.println(Powa.powaPowa(value));
}
System.out.println("Stopping Application: " + MainClass.class.getSimpleName());
}
}
Other class:
package my.visualvm.example;
final class Powa {
private Powa() {
}
static double powaPowa(double powa) {
return Math.pow(powa, 2);
}
}
