Performance of any software system is the measure of how fast or responsive that system is under a given workload and a given hardware. By workload, I mean data requirements in the backend, and the volume of requests and hardware can be defined by the system’s capacity, such as CPU, memory, etc. 

How To Identify a Performance Problem

Most performance problems evolve from a queue that builds up due to inefficient code block, which results in slow processing, serial access instead of concurrent access, or limited resources, which are incapable of serving the capacity required for efficient processing.