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Mike Müller: Measure, don't Guess - How to find out if and where to optimize

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Published on May 29, 2015

Python is a great language. But it can be slow compared to other languages for certain types of tasks. If applied appropriately, optimization may reduce program runtime or memory consumption considerably. But this often comes at a price. Optimization can be time consuming and the optimized program may be more complicated. This, in turn, means more maintenance effort. How do you find out if it is worthwhile to optimize your program? Where should you start? This tutorial will help you to answer these questions. You will learn how to find  an optimization strategy based on quantitative and objective criteria.You will experience that one's gut feeling what to optimize is often wrong.The solution to this problem is: „Measure, Measure, and Measure!“. You will learn how to measure program run times as well as profile CPU and memory.There are great tools available. You will learn how to use some of them. Measuring is not easy because, by definition, as soon as you start to measure, you influence your system. Keeping this impact as small as possible is important. Therefore, we will cover different measuring techniques.Furthermore, we will look at algorithmic improvements. You will see that the right data structure for the job can make a big difference. Finally, you will learn about different caching techniques.Tutorial prerequisites and instructions.

Mike Müller

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