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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 FREE CHAPTER
2. Chapter 1: Why Go? 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

Memory profiling

Memory profiling helps you analyze how your Go program allocates and uses memory. It’s critical in systems programming. where you frequently deal with constrained resources and performance-sensitive operations. Here are some key questions it helps answer:

  • Memory leaks: Are you unintentionally holding on to memory that’s no longer needed?
  • Allocation hotspots: Which functions or code blocks are responsible for most allocations?
  • Memory usage patterns: How does memory use change over time, especially under different load conditions?
  • Object sizes: How can you understand the memory footprint of key data structures?

Let’s learn how to set up memory profiling for our monitoring program based on the following snippet:

f, err := os.Create("memprofile.out")
if err != nil {
    // Handle error
}
defer f.Close()
runtime.GC()
pprof.WriteHeapProfile(f)

Let’s understand what’s happening...

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