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Oracle JRockit: The Definitive Guide Paperback – June 1, 2010

4.7 out of 5 stars 7 customer reviews

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Editorial Reviews

About the Author

Marcus Hirt is one of the founders of Appeal Virtual Machines, the company that created the Java Virtual Machine JRockit. He is currently working as Team Lead, Engineering Manager and Architect for the JRockit Mission Control team. In his spare time he enjoys coding on one of his many pet projects, composing music and scuba diving. Marcus has been an appreciated speaker on Oracle Open World, eWorld, BEAWorld, EclipseCon, Nordev and Expert Zone Developer Summit, and has contributed JRockit related articles and webinars to the JRockit community. Marcus Hirt got his M.Sc. education in computer science from the Royal Institute of Technology in Stockholm. Marcus Lagergren holds a M.Sc. in computer science from the Royal Institute of Technology in Stockholm, Sweden. He has a background in computer security but has worked with runtimes since 1999. Marcus Lagergren was one of the founding members of Appeal Virtual Machines, the company that developed JRockit. Marcus has been team lead and architect for the JRockit code generators and has been involved in pretty much every other aspect of the JRockit JVM internals. Since 2007 Marcus works for Oracle on fast Virtualization technology. Marcus lives in Stockholm with his wife and two daughters. He likes power tools, heavy metal and scuba diving.
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Product Details

  • Paperback: 588 pages
  • Publisher: Packt Publishing (June 1, 2010)
  • Language: English
  • ISBN-10: 1847198066
  • ISBN-13: 978-1847198068
  • Product Dimensions: 7.5 x 1.3 x 9.2 inches
  • Shipping Weight: 2.6 pounds (View shipping rates and policies)
  • Average Customer Review: 4.7 out of 5 stars  See all reviews (7 customer reviews)
  • Amazon Best Sellers Rank: #2,055,228 in Books (See Top 100 in Books)

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Top Customer Reviews

Format: Paperback
I have been involved in developing both the JRockit JVM and JRockit Mission Control for nine years and I am thus very familiar with the subject of this book. I already knew that the authors are brilliant engineers who know what they are talking about. This book also shows that they can talk about it well. Marcus and Marcus have managed to condense years of research and development into one book and translate it to "human readable" format. This book takes you under the hood and behind the scenes of JRockit. It digs deep and goes personal, explaining not only how the JVM works but also why.

This is a book for Java developers who take their craft seriously and want to open the black box beneath them and make friends with the mystical creature that resides inside. This is a book for Java administrators who want hands-on tips on how to make their life easier and their applications run better and faster. This is a book for the computer science geek who simply needs to know how all the magic is done.

The first part of the book opens up the JVM, pulls out the parts and puts them on display. These chapters describe code generation, memory management, threads and locks, both in general and in the specific example of the JRockit JVM. This is more than a whitepaper on JRockit internals, this is a complete schoolbook in JVMs. With each chapter you also get pointers for what to do and especially what not to do in order to work with the black box rather than against it.

After a chapter on benchmarking and tuning comes the probably most comprehensive guide available to the JRockit tools - JRockit Mission Control and JRCMD. Plenty of screenshots and example outputs take you through the tools, how to use them and even how to extend them.
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Format: Paperback
This book is full of information that is useful to Java programmers. While the last half of the book is specific to JRockit, the first half is good for anyone. Going beyond basic Java syntax, this book teaches the programmer how the JVM treats your program. Threading and synchronization, memory management, and program optimization are all covered in depth.

This book would be of minimal value to a new Java programmer, it's just too deep. The more experienced Java programmer will benefit from this book, even if the reader isn't a JRockit user. (JRockit has recently been made freely available, and under a good license.) I'd recommend this book for any serious Java programmer.
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Format: Paperback
This one was on my list of things to buy for quite some time. The only reason for this is simple: Oracle JRockit is one of the industry's highest performing Java Virtual Machines and I loved it's JIT everything approach since the beginning. I did not manage to do this, since it was published. But a few days ago, the digital edition arrived on my iPad and I finally found the time to read it. Sit back and relax. This is my personal view about the most stunning Java related book of 2010!

The Authors
As usual, I start with a short introduction of the authors. In this special case, I feel this is very important to understand the book. Both started out with Appeal Virtual Machines where they were founders. This was the company, which initially developed JRockit. Marcus Lagergren holds a M.Sc. in computer science from the Royal Institute of Technology in Stockholm, Sweden. He has a background in computer security but has worked with runtimes since 1999. Marcus has been team lead and architect for the JRockit code generators and has been involved in pretty much every other aspect of the JRockit JVM internals. Since 2007 Marcus works for Oracle on fast Virtualization technology.

Marcus Hirt is currently working for Oracle as Team Lead, Engineering Manager and Architect for the JRockit Mission Control team. Marcus has been an appreciated speaker on Oracle Open World, eWorld, BEAWorld, EclipseCon, Nordev and Expert Zone Developer Summit, and has contributed JRockit related articles and webinars to the JRockit community. Marcus Hirt got his M.Sc. education in computer science from the Royal Institute of Technology in Stockholm.

The Content
Java developers are always on the lookout for better ways to analyze application behavior and gain performance.
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Format: Paperback
This book has really impressed me. It goes into deep details of JVM and describes different approaches to various topics related to memory management, threads management, code analysis, subtle details within low level code that are the result of optimization. Authors really dive into details. What's more important, this book could still surprise long time developer like me myself. I have found few, really interesting ideas in terms of memory optimization and threads management. Even though book covers JRockit, you can still get a loot of information related to JVMs in general.

Apart from JVM itself, book covers very comprehensively benchmarking, JRockit Mission Control, runtime analyzer and memory leak detector. And this is done really good. You get like 250 pages of knowledge related to code analysis, JRockit's tools usage and useful ideas from the authors.

What's important here is that JRockit is already one of the Oracle's platforms and even more important is the fact it will be partially integrated into Java 1.8. That said, it's worth to become more familiar with it if you consider yourself a serious Java developer.

Just one remark on the content. This book can be sometimes demanding as authors dive deep into assembler code level. So, it's rather recommended for engineers or people who are familiar with this kind of details.

Highly recommended.
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