Book Image

Java 9 High Performance

By : Mayur Ramgir, Nick Samoylov
Book Image

Java 9 High Performance

By: Mayur Ramgir, Nick Samoylov

Overview of this book

Finally, a book that focuses on the practicalities rather than theory of Java application performance tuning. This book will be your one-stop guide to optimize the performance of your Java applications. We will begin by understanding the new features and APIs of Java 9. You will then be taught the practicalities of Java application performance tuning, how to make the best use of garbage collector, and find out how to optimize code with microbenchmarking. Moving ahead, you will be introduced to multithreading and learning about concurrent programming with Java 9 to build highly concurrent and efficient applications. You will learn how to fine tune your Java code for best results. You will discover techniques on how to benchmark performance and reduce various bottlenecks in your applications. We'll also cover best practices of Java programming that will help you improve the quality of your codebase. By the end of the book, you will be armed with the knowledge to build and deploy efficient, scalable, and concurrent applications in Java.
Table of Contents (11 chapters)

The benefits of using the JMH

The JMH works as an open project that you may run in any JDK environment. It is designed to provide you with several library options of using different microbenchmarks. These benchmarks can measure throughput as well as the processing time performance of the various functions and code elements.

There are several benefits of using this approach of optimizing the code on a micro level. Some experts are not sure if microbenchmarks provide the right benefits, but careful use in important code sections is certainly beneficial.

One benefit that you receive as a programmer is the understanding of how your code is using the available machine resources. You get the answers of how the memory is storing your objects and how they are being lined up for processing through the right setup of microbenchmarks.

Microbenchmarks are also great at creating performance...