# Introduction

In this tutorial, we are going to learn some optimization methods for C programs outlined as follows:

* The performance of programs can be measured by cache misses and TLB misses, which can be checked by using `perf`.
* Some concrete examples showing the optimization tricks:
  * branch prediction friendliness,
  * loop unrolling,
  * sequential access as to random access.

Try to play around with them! Hope you can enjoy this lab!

By CHEN Zhuangbin


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