Heap dump analysis is another important step in troubleshooting your Java application. As we have seen earlier, thread dump gives us a snapshot of the threads running in the JVM. This greatly helps us to identify the problematic areas of threads execution. A heap dump snapshot is little bit different to the thread dump snapshot. It gives us a snapshot of the heap memory. As you may recall, heap memory stores information about objects. This snapshot gives us very low-level information about objects like class, fields, primitive values, static fields, and references. It helps to identify various performance leaks such as class loader leaks, memory leaks due to not clearing an object reference after use, and so on. Now, let’s understand the heap dump in detail.
Java 9 High Performance
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Java 9 High Performance
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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.
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Current Title:
Java 9 High Performance
Table of Contents (11 chapters)
Free Chapter
Learning Java 9 Underlying Performance Improvements
Identifying Performance Bottlenecks
Learning How to Troubleshoot Code
Learning How to Use Profiling Tools
Understanding Garbage Collection and Making Use of It
Optimizing Code with Microbenchmarking
Speeding Up JSON Generation
Tools for Higher Productivity and Faster Application
Multithreading and Reactive Programming
Microservices
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