message: Add required flush in the while loop
diff: @@ -386,6 +386,7 @@ int main(int argc, char *argv[])
  std::cout << std::setprecision(coutPrecision) << counters.qpi.outgoingTotal << " ";
  std::cout << "\n";
  }
  + std::cout << std::flush;
  }
  return 1;
  