Method summary

src/osd/OSDMap.cc:7358–7364

public:
  string summary() {
    ostringstream out;
    out << "MIN/MAX VAR: " << lowprecision_t(min_var)
	<< "/" << lowprecision_t(max_var) << "  "
	<< "STDDEV: " << lowprecision_t(dev());
    return out.str();
  }
};

ostream& operator<<(ostream& out,