Question

I have a program that performs a long-time computations, so I want to speed up its performance. So I tried to launch 3 threads at the moment, but java.exe still occupies 25% of CPU usage (so, only one CPU is used), and it’s remains even if I try to use .setPriority(Thread.MAX_PRIORITY); and set priority of java.exe at realtime (24). I tried to use RealtimeThread but seems like it works even slower. It would be perfect if each thread was allocated to one processor and the total CPU usage has increased to 75%, but I don’t know how to do it. And that’s how my code looks right now:

Thread g1 = new MyThread(i,j);
g1.setPriority(Thread.MAX_PRIORITY);
g1.run();
Thread g2 = new MyThread(j,i);
g2.setPriority(Thread.MAX_PRIORITY);
g2.run();
Thread g3 = new MyThread(i,j);
g3.setPriority(Thread.MAX_PRIORITY);
g3.run();
if (g1.isAlive()) {
        g1.join();
}
if (g2.isAlive()) {
        g2.join();
}
if (g3.isAlive()) {
        g3.join();
}

Answer 1

You aren’t actually using threads.

You need to call .start(), not .run().