public void setGraphScale(float scale) {
        if (this.scale == scale) {
            return;
        }
        this.scale = scale;
        if (graph != null) {
            graph.setLocalScale(1, scale, 1);
        }
    }
Sets the vertical scale of the visualization where
 each unit is a millisecond.  Defaults to 2, ie: a
 single millisecond stretches two pixels high.
@param scale the scale
jme3-core/src/main/java/com/jme3/app/BasicProfilerState.java