We will introduce you to a few free tools that are available to monitor and manage performance on Unix systems. These tools also provide guidelines on how to diagnose and fix performance problems in the Unix environment. Unix has following major resource types that need to be monitored and tuned − CPU Memory Disk space Communications lines I/O Time Network Time Applications programs Performance Components The following table lists out five major components which take up the system time − S.No. Component & Description 1 User State CPU The actual amount of time the CPU spends running the users’ program in the user state. It includes the time spent executing library calls, but does not include the time spent in the kernel on its behalf 2 System State CPU This is the amount of time the CPU spends in the system state on behalf of this program. All I/O routines require kernel services. The programmer can affect this value by blocking I/O transf...
PhD || Artificial Intelligence, Machine Learning, Soft Computing, Quantum Machine Learning, Data Sciences.