Sir, I am not getting idea about making xgraph. As I want to make graph between time and throughput or other parameters. please tell me in detail from starting. As I have the awk code and .tr file. What are the commands. I will be very thankful if you explain me with the help of a demo. I am using the command: awk -f genthroughput.awk simple.tr > simple.xgr but here only one column is created in xgr file showing the throughput. Please help me.