Processing sketch to show your mouse's movement

mouse_movement_tester.pde

// Processing sketch to show your mouse's movement 
// Linux's mouse acceleration really sucks.

void setup() {
  size(800, 800);
  background(0);
}

void draw(){
  if (mousePressed == true) {
    background(0);
  }
  stroke(255);
  strokeWeight(1);
}

void mouseMoved(){
  point(mouseX, mouseY);
}