You have to install matplotlib in your machine to generate graphs. Graphs depicting Envoy's performance can be generated by running the below command. The graph will compare between Envoy and direct connection, with respect to the field provided as argument, such as the deafault one total_req_per_sec. Multiple Envoy Hash ids and Run IDs can be provided for the comparison.The above command will generate two graphs: 1) A bar graph for Envoy proxy and direct connection with Envoy Hash xxxxxy. 2) Another bar for Envoy and direct connection with Run IDs 10, 11, 12, 13, 14, 15.