docs: public static void main(String[] args) {
          int repeat = 1000;
          long start, duration, correct;
          double per;
  
          String processName = java.lang.management.ManagementFactory.getRuntimeMXBean().getName();
          String pidString = processName.substring(0, processName.indexOf('@'));
          pid = Integer.valueOf(pidString);
  
          // ETHAN (11/7/2018): If loading the native library does not have to succeed, why load?
          // org.voltdb.NativeLibraryLoader.loadVoltDB(false);
  
          // test the default fallback performance
          start = System.currentTimeMillis();
          correct = 0;
          for (int i = 0; i < repeat; i++) {
              long rss = PSScraper.getPSData(pid).rss;
              if (rss > 0) correct++;
          }
          duration = System.currentTimeMillis() - start;
          per = duration / (double) repeat;
          System.out.printf("%.2f ms per \"ps\" call / %d / %d correct\n",
                  per, correct, repeat);
  
          // test linux procfs performance
          start = System.currentTimeMillis();
          correct = 0;
          for (int i = 0; i < repeat; i++) {
              long rss = getRSSFromProcFS();
              if (rss > 0) correct++;
          }
          duration = System.currentTimeMillis() - start;
          per = duration / (double) repeat;
          System.out.printf("%.2f ms per procfs read / %d / %d correct\n",
                  per, correct, repeat);
  
          // test mac performance
          start = System.currentTimeMillis();
          correct = 0;
          for (int i = 0; i < repeat; i++) {
              long rss = ExecutionEngine.nativeGetRSS();
              if (rss > 0) correct++;
          }
          duration = System.currentTimeMillis() - start;
          per = duration / (double) repeat;
          System.out.printf("%.2f ms per ee.nativeGetRSS call / %d / %d correct\n",
                  per, correct, repeat);
      }