On October 18th, Oracle released Java 7 Update 1, bringing Java 7 much needed stability and fixing a critical issue. InfoQ takes a look at what new performance improvements are included.
Application Performance Measurement (APM) vendor AppDynamics has released AppDynamics Lite version 2.0, bringing new features from their commercial product into the free version.
Solutions Design has released ORM Profiler, a tool meant to help improve data access layer performance. It tracks and logs ADO.NET calls so that developers can analyze their data access and discover potential problems.
New Relic is bringing its well-regarded web application performance service to Java applications running on Heroku's PaaS. The add-on is offered in two versions, a free standard version, and a professional subscription service currently costing $0.06 per dyno hour. New Relic have also announced Python support for their stand-alone product.
The Unladen Swallow project that aims to speed up Python has proposed to be merged into mainstream Python. One of Unladen Swallow's goals was to remove the GIL; a new implementation of Python's GIL by Antoine Pitrou will be fairer and less intrusive on multicore CPUs. Also: Squeak Smalltalk has been ported to Android.
Clojure 1.1 RC1 is out and cuts the overhead of functional programming with a few new constructs: transients bring controlled mutability for persistent data structures; chunked sequences make lazy sequences more efficient. InfoQ takes a look at what makes these improvements work.
NewRelic just released RPM 2, the latest version of their performance monitoring software. RPM, which is available as SaaS (Software as a Service) now supports monitoring Java web/JEE applications as well as Ruby on Rails applications. We talked to NewRelic's Lew Cirne about the new release.
A new release of the Ruby Enterprise Edition switches from Ruby 1.8.6 to Ruby 1.8.7 and includes patches that significantly improve performance, as Evan Weaver from Twitter confirms.
JRuby 1.3 is now available, bringing performance improvements and compatibility with Google AppEngine. Work on other improvements is continuing and a first version of the ruby2java compiler is now available. Also: InvokeDynamic support is making it's way into the builds for the next Java version.
NewRelic announced a cooperation with the Rails Core team to improve Rails performance. An opt-in feature allows to make performance data available to the Rails Core team, which can use it to figure out Rails bottlenecks in real world Rails apps. Also: FiveRuns' TuneUp performance monitoring tools now supports Merb.
In this article, Steven Haines talks about web application performance tuning which used to be more of an art than science. He proposes a method called wait-based tuning, making the entire process more measurable and, consequently, more scientific.