code: public static void main(String argv[]) throws Exception {
      try {
        Configuration conf = new Configuration();
        UtilizationReporter utilizationReporter = 
                new UtilizationReporter(conf);
        utilizationReporter.start();
      } catch (Throwable e) {
        System.err.println(e);
        LOG.error(StringUtils.stringifyException(e));
        System.exit(-1);
      }
    }
docs: main program to run on each TaskTracker