No performance.mozMemory object available. Set dom.enable_memory_stats to True to see heap size info.
  Show heap size graph: 
    
    Duration: s
    
    
    Currently running test load:
    
        Time remaining: (not running)
        60 fps: n/a
        45 fps: n/a
        30 fps: n/a
        Garbage items per frame:
    
        Garbage piles: