Java Performance Tuning

Java(TM) - see bottom of page

|home |services |training |newsletter |tuning tips |tool reports |articles |resources |about us |site map |contact us |
Tools: | GC log analysers| Multi-tenancy tools| Books| SizeOf| Thread analysers| Heap dump analysers|

Our valued sponsors who help make this site possible
JProfiler: Get rid of your performance problems and memory leaks! 

Training online: Concurrency, Threading, GC, Advanced Java and more ... 

News January 2018

Get rid of your performance problems and memory leaks!

Modern Garbage Collection Tuning
Shows tuning flow chart for GC tuning

Java Performance Training Courses
COURSES AVAILABLE NOW. We can provide training courses to handle all your Java performance needs

Java Performance Tuning, 2nd ed
The classic and most comprehensive book on tuning Java

Java Performance Tuning Newsletter
Your source of Java performance news. Subscribe now!
Enter email:

Training online
Threading Essentials course

Get rid of your performance problems and memory leaks!

Back to newsletter 206 contents

It seems like we are now into a phase of growing diversity for mainstream JVMs. There was another period years ago when it seemed that the available mainstream JVMs were expanding. We had JRockit and Sun JVMs competing, alongside the IBM JVM; Waratek brought out a multi-tenancy JVM targeted at the cloud; and Excelsior was present along with Microsoft and HP all having their own JVMs, not to mention the GCJ attempt and a few experimental ones from academia as well as the Sun real-time JVM and the GemStone distributed JVM (with software transactional memory)!

Then we went through a period of JVM consolidation, divestment and plain neglect. But looking at the mainstream JVMs we have now, it feels, at least to me, like it's under more active development than ever before. Oracle of course has consolidated JRockit into HotSpot and that is now the HotSpot JVM. But additionally it's now almost completely open sourced, there is now the OpenJDK JVM which Oracle HotSpot is based on, with additional features like Mission Control - which is due to become open sourced too! Then Oracle has decided to create yet another JVM, the GraalVM for all their more interesting future enhancements.

Other vendors have also been active: Azul; IBM has open sourced their JVM with the Eclipse OpenJ9 JVM (see the talk listed in the articles below); and we still have Excelsior JET keeping up with Java developments. Of course we still have many other experimental and niche JVMs, but what's interesting is the mainstream space and that looks much more exciting than it has for years. Which means we performance engineers have more options to try - exciting times!

Now on to our usual links to articles, tools, news, talks, blogs. And if you need the tips from this month's articles and talks, as ever they are extracted into this month's tips page.

A note from this newsletter's sponsor

Get rid of your performance problems and memory leaks!


Java performance tuning related news.


Java performance tuning related tools.


Jack Shirazi

Back to newsletter 206 contents

Last Updated: 2022-06-29
Copyright © 2000-2022 All Rights Reserved.
All trademarks and registered trademarks appearing on are the property of their respective owners.
Java is a trademark or registered trademark of Oracle Corporation in the United States and other countries. is not connected to Oracle Corporation and is not sponsored by Oracle Corporation.
RSS Feed:
Trouble with this page? Please contact us