Book Image

Mastering Java 9

By : Dr. Edward Lavieri, Peter Verhas
Book Image

Mastering Java 9

By: Dr. Edward Lavieri, Peter Verhas

Overview of this book

<p>Java 9 and its new features add to the richness of the language, one of the languages most used by developers to build robust software applications. Java 9 comes with a special emphasis on modularity with its integration with Jigsaw. This would be your one-stop guide to mastering the language.</p> <p>You'll be provided with an overview and explanation of the new features introduced in Java 9 and the importance of the new APIs and enhancements. Some of the new features of Java 9 are ground-breaking and if you are an experienced programmer, you will be able to make your enterprise application leaner by learning these new features. You'll be provided with practical guidance in applying the newly acquired knowledge in regards to Java 9 and further information on future developments of the Java platform. This book will improve your productivity, making your application faster. By learning the best practices in Java, you'll become the “go-to” person in your organization.</p> <p>By the end of the book, you'll not only know the important concepts of Java 9, but you'll also have a nuanced understanding of the important aspects of programming with this great language.</p>
Table of Contents (23 chapters)
Title Page
Credits
About the Authors
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

Techniques for avoiding microbenchmarking pitfalls


Microbenchmarking is not something that every developer will have to worry about, but for those that do, there are several pitfalls that you should be aware of. In this section we will review the most common pitfalls and suggest strategies for avoiding them.

Power management

There are many subsystems that can be used to help you manage the balance between power and performance (that is, cpufreq). These systems can alter the state of time during benchmarks.

There are two suggested strategies to this pitfall:

  • Disable any power management systems before running tests
  • Run the benchmarks for longer periods

OS schedulers

Operating system schedulers, such as Solaris schedulers, help determine which software processes gain access to a system's resources. Use of these schedulers can result in unreliable benchmarking results.

There are two suggested strategies to this pitfall:

  • Refine your system scheduling policies
  • Run the benchmarks for longer periods

Time...