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System Programming Essentials with Go

You're reading from   System Programming Essentials with Go System calls, networking, efficiency, and security practices with practical projects in Golang

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Product type Paperback
Published in Jun 2024
Publisher Packt
ISBN-13 9781837634132
Length 408 pages
Edition 1st Edition
Languages
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Author (1):
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Alex Rios Alex Rios
Author Profile Icon Alex Rios
Alex Rios
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Toc

Table of Contents (24) Chapters Close

Preface 1. Part 1: Introduction
2. Chapter 1: Why Go? FREE CHAPTER 3. Chapter 2: Refreshing Concurrency and Parallelism 4. Part 2: Interaction with the OS
5. Chapter 3: Understanding System Calls 6. Chapter 4: File and Directory Operations 7. Chapter 5: Working with System Events 8. Chapter 6: Understanding Pipes in Inter-Process Communication 9. Chapter 7: Unix Sockets 10. Part 3: Performance
11. Chapter 8: Memory Management 12. Chapter 9: Analyzing Performance 13. Part 4: Connected Apps
14. Chapter 10: Networking 15. Chapter 11: Telemetry 16. Chapter 12: Distributing Your Apps 17. Part 5: Going Beyond
18. Chapter 13: Capstone Project – Distributed Cache 19. Chapter 14: Effective Coding Practices 20. Chapter 15: Stay Sharp with System Programming 21. Index 22. Other Books You May Enjoy Appendix : Hardware Automation

CPU profiling

CPU profiling is the process of analyzing how much CPU time is consumed by different sections of your Go program. This analysis helps you identify the following aspects:

  • Bottlenecks: Code areas using excessive CPU time, slowing down your application
  • Inefficiencies: Functions or code blocks that can be optimized to use less CPU resources
  • Hotspots: The most frequently executed parts of your program, the prime focus for optimization

To exercise profiling, we’ll create a file change monitor. The program will monitor a specified directory for file changes. To make the scope concise, our program will detect file creation, deletion, and modification. Also, upon detecting changes, it sends alerts (printed to the console).

The complete code can be found in this book’s GitHub repository. For now, we are exploring the core features and the corresponding code sections so that we have a clearer understanding of how it operates:

  1. First...
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