Book Image

Hands-On High Performance with Go

By : Bob Strecansky
Book Image

Hands-On High Performance with Go

By: Bob Strecansky

Overview of this book

Go is an easy-to-write language that is popular among developers thanks to its features such as concurrency, portability, and ability to reduce complexity. This Golang book will teach you how to construct idiomatic Go code that is reusable and highly performant. Starting with an introduction to performance concepts, you’ll understand the ideology behind Go’s performance. You’ll then learn how to effectively implement Go data structures and algorithms along with exploring data manipulation and organization to write programs for scalable software. This book covers channels and goroutines for parallelism and concurrency to write high-performance code for distributed systems. As you advance, you’ll learn how to manage memory effectively. You’ll explore the compute unified device architecture (CUDA) application programming interface (API), use containers to build Go code, and work with the Go build cache for quicker compilation. You’ll also get to grips with profiling and tracing Go code for detecting bottlenecks in your system. Finally, you’ll evaluate clusters and job queues for performance optimization and monitor the application for performance regression. By the end of this Go programming book, you’ll be able to improve existing code and fulfill customer requirements by writing efficient programs.
Table of Contents (20 chapters)
Section 1: Learning about Performance in Go
Section 2: Applying Performance Concepts in Go
Section 3: Deploying, Monitoring, and Iterating on Go Programs with Performance in Mind

Exploring pprof-like traces

The Go tool trace can also generate four different types of traces that may be pertinent to your troubleshooting needs:

  • net: A network-blocking profile
  • sync: A synchronization-blocking profile
  • syscall: A syscall-blocking profile
  • sched: A scheduler-latency profile

Let's take a look at an example of how to use these tracing profiles on a web server:

  1. First, we initialize our main and import the necessary packages. Note the blank identifier for the explicit package name within _ "net/http/pprof". This is used in order to make sure we can make the tracing call:
package main

import (
_ "net/http/pprof"
  1. We next set up a simple web server that waits five seconds and returns a string to the end user:
func main() {

handler := func(w http.ResponseWriter, req *http...