Let's sum up what we covered about measurement in this chapter and what we'll cover in the next chapter. We covered the importance of measurement in solving performance problems. Without measuring, you cannot hope to write high-performance software; you will be coding in the dark.
We highlighted some of the tools that you can use to measure performance. We showed you how to use a selection of these and how to write your own. We also covered the value of taking a scientific approach to measurement. Making sure that your results are repeatable and that you record the correct units of measurement, are important concerns.
In the next chapter, we will learn how to fix common performance problems. You will gain the skills to speed up the low-hanging fruit and make yourself look like a performance wizard to your colleagues. No longer will it be a case of "it worked in test; it's an operations problem now".