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Java 9 High Performance

You're reading from   Java 9 High Performance Practical techniques and best practices for optimizing Java applications through concurrency, reactive programming, and more

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Product type Paperback
Published in Nov 2017
Publisher Packt
ISBN-13 9781787120785
Length 398 pages
Edition 1st Edition
Languages
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Authors (2):
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Nick Samoylov Nick Samoylov
Author Profile Icon Nick Samoylov
Nick Samoylov
Mayur Ramgir Mayur Ramgir
Author Profile Icon Mayur Ramgir
Mayur Ramgir
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Toc

Table of Contents (11) Chapters Close

1. Learning Java 9 Underlying Performance Improvements FREE CHAPTER 2. Identifying Performance Bottlenecks 3. Learning How to Troubleshoot Code 4. Learning How to Use Profiling Tools 5. Understanding Garbage Collection and Making Use of It 6. Optimizing Code with Microbenchmarking 7. Speeding Up JSON Generation 8. Tools for Higher Productivity and Faster Application 9. Multithreading and Reactive Programming 10. Microservices 11. Making Use of New APIs to Improve Your Code

Summary

The JMH is a powerful harness and is truly capable of creating and running several types of microbenchmarks. The important point to remember is that JDK 9 is going to be the most powerful version of the famous virtual machine and will require the use of the most optimized code. microbenchmarks have been present in Java and other languages. They provide the time it needs to run a particular code as well as the throughput performance.

This information is useful in several instances, but it can simply present faulty information in the case of the compiler performing the optimizations, and eliminating the dead code, which it finds within the loops that are present in the created microbenchmark.

The JMH will now be included with the Java 9 package, and therefore, programmers should now attempt to actively use it as long as they are careful that it does not measure useless context...

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