PerfTest: print date

Tests/noDist/PerfTest.cpp

@@ -74,6 +74,7 @@ int main (int argc, char** argv)
         std::tm date = *std::localtime(&d);
         std::stringstream sstr;
         sstr << std::put_time(&date, "%F %T");
+        std::cout << "Date: " << sstr.str() << std::endl;
         params.json["env"]["date"] = sstr.str();
     }