static JLabel jMemoryView() {
  final JLabel l = jlabel(); 
  installTimer(l, 500, new Runnable {
    long compilationTime;
    public void run {
      //l.setText("T: " + toM(totalMemory()) + "M");
      //l.setToolTipText("T = Total Java heap. Process ID: " + getPID());
      l.setText(toM(usedMemory()) + "/" + toM(totalMemory()) + "M");
      S toolTip = "RAM used/total. Process ID: " + getPID();
      
      long t = hotSpotCompilationTime();
      bool compiling = t >= compilationTime + 500/10;
      float ratio = (t-compilationTime)/500f;
      compilationTime = t;
      if (compiling)
        toolTip += ". OPTIMIZING";
      //l.setForeground(compiling ? Color.green : Color.black);
      l.setForeground(blendColors(Color.black, Color.green, ratio));
      l.setToolTipText(toolTip);
    }
  });
  onClick(l, r { fullGCInBackground() });
  ret l;
}