Abstract. Emergency networks normally operate under highly unpredictable wireless environment and hence real time performance information holds a great significance that cannot be reflected by the conventional post evaluation approach. In this paper, we propose a performance monitoring tool to display the network performance in real-time for mobile ad hoc network using OLSR protocol, deployed under emergency conditions. Moreover, simplified GUI with real time visualization, network performance summarization along with run time triggering of sudden change in the network has been introduced to provide user with easier, user-friendly and comprehensible perception on the run time network performance.