Chapter 12.  Performance Tuning, Profiling, and Concurrency

	"Premature optimization is the root of all evil"
	--Donald Knuth, a renowned computer scientist and mathematician

For real-world applications, performance is as important as features, robustness, maintainability, testability, and usability. Performance is directly proportional to the scalability of an application. Ending this book without looking at performance enhancement was never an option. In fact, we delayed discussing the topic of performance until the last chapter of the book to avoid premature optimization. In this chapter, we will give hints on improving performance using profiling as the key technique. We will also discuss the relevant frameworks for multicore, distributed systems. We will discuss the following topics in this chapter:

• Profiling the code
• Installing Cython
• Calling the C code
• Creating a pool process with multiprocessing
• Speeding up embarrassingly parallel for loops with Joblib...