Blogs by topic: Performance
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Testing
Today I decided it was past time to reorganize the slides in the performance testing section of the course. I added a number of new diagrams and charts to help organize the materials and then I went back and started to review some of the definitions that I was using. First up was the question; what is performance testing and how is it related to load testing
Programming
I mentioned the idea to use Wordle as an execution profiler while presenting the profiling section of my performance tuning course in Paris last December. The idea was seeded by presentation that Neal Ford did a few years ago in which he used Wordle to expose the vocabulary of a Java application. Instead of vocabulary, I wanted to see if Wordle could be used to visualize an applications dominate behavior.
JavaFX 2.0 is not multiplatform! It can't do subpixel antialiasing!! … these were among the reactions to the first beta releases, that I'm not sure to understand as trolling or simple laziness. These mysteries are usually solved with a simple look at JavaFX's public JIRA issue tracking system. The current implementation is still a beta, not even a feature-complete beta, so there are many...
End of the last year and beginning of this I've spent trying to get Magnolia work with ModeShape. There were issues with both of the apps. On one end, Magnolia had issues with the Modeshape session data refresh strategy, on the other one, Modeshape was sometimes stricter then JCR spec required it to be when it came to queries. All of those were elementary issues that were relatively easy to...
If you want to work for DropBox, they have an interesting programming test which solution must be submitted together with the CV. I’m not considering a position at DropBox, but their test was very fun to ignore: an interesting challenge in algorithms, and another opportunity to exercise JavaFX as any geometric problem surely deserves some GUI.
Now that JDK 6u21, JavaFX 1.3.1 and NetBeans 6.9.1 are all finally released, I'm back to checking the latest news and improvements in JavaFX. The official Release Notes points to the deployment improvements as the single new end-user feature, so I've checked the latest improvements in this area.
Recently I was in urged to do a web project with the latest and coolest web framework Ruby on Rails. One line of code sprang to me eyes......
JavaOne
"The multicore challenge" is the challenge to developers of software products to write code that effectively utilizes modern multi-core / multi-processor computers. Two years ago, I wondered if the multicore challenge was still relevant. In part, I was thinking about how applications were moving from the desktop into the cloud. So, if the apps people are running are running in a browser, does it matter if their desktop system (or pad or phone) is multicore?...
Blogging
This page is for introducing Grizzly-Thrift server/client modules and sharing various benchmarking results.
Object serialization/deserialization of Java comes expensive. For improving this lack, we sometimes used to use other frameworks for RPC such as Protobuf and Thrift which support various programming languages, RPC and own data structures.
Especilally, Thrift has already provided various...
J2SE
One of the old bits of tuning advice given when Java memory management was not as tall as it it today was to set max heap to min heap. After all, we don't really want the JVM messing around with memory when it should really be getting on with things. Fast forward a few years and the adaptive memory management picture has matured considerably.
Just wrapped up my last performance tuning course for this year and for the second time running, some members of my Parisian group had the opportunity to run the exercises on virtualized hardware. The results were interestingly horrible
GUI
In my last blog I’ve introduced JavaFX 2.0 beta, describing an initial port of JavaFX Balls, also in beta stage at that time. Now I finally finish JavaFX Balls 3.
Look ma, no design!
I don’t pretend to be a designer, and the consequence is that when I make a mashup of animation, video and web, that’s the result. Get the source code here.
I’ve added new layers of content...
The biggest announcement - and the biggest surprise for many - of JavaOne 2010 was certainly Oracle's new plans for JavaFX 2.0... or, should we say, Swing 2.0?
Performance
invokedynamic is getting faster, a lot of faster.
Deployment
By now, you are hopefully well aware that Glassfish 3.1 has been released. Because the performance group has been a little quiet lately, maybe you're thinking there aren't a lot of interesting performance features in this release. In fact, there are two key performance benefits: one which benefits developers, and one which is important for anyone using Glassfish's new clustering and high-...
NetBeans
Netbeans RCP - Advanced Random Stuff (ARS)
This post shows how the slowness detection feature of the Netbeans IDE can be used in Netbeans RCP Applications.
J2EE
One of the exciting things about teaching is the fact no matter how well you prepare for a class, events will always surprise you.Yesterday I was caught by surprise in the middle of a class by what seemed like a global Glassfish admin console outage.
I was teaching my Software Architecture students at IGTI how to change the default maximum thread pool size for the HTTP listener in Glassfish 3.0...
Accessibility
The www.abelski.com web site offers free (for personal and academic usage) courses about various topics in software development. The site focuses on Java technologies.
Community
Mark Reinhold announced today that the JDK 7 / JavaSE 7 project has slipped once again: mid-2011 without Jigsaws and Lambdas, late 2012 for JavaSE 8 with those. The delay (or some other bad news like dropping features) was already expected by anyone who tracks the project. But really, how big and bad is this delay?
Web Applications
This quick entry announces that we've started work on JSF 2.1 in earnest.
