PerfMon::Tuple Node1 PerfMon::Tuple Node2 std::unordered_map < std::string, IoCompStore_t > Node2->Node1 +iocomp Node3 std::string Node3->Node2 +keys Node8 std::unordered_map < std::string, CompStore_t > Node3->Node8 +keys Node4 std::basic_string< char > Node4->Node3 Node5 std::unordered_map < K, T > Node5->Node2 +elements Node5->Node8 +elements Node6 K Node6->Node5 +keys Node7 T Node7->Node5 +elements Node8->Node1 +comp