Category: Author: Stephen Bannasch
The Firefox performance regression introduced into the codebase on 2012-09-29 and present in FF v18, v19, and Nightly versions is much more serious than I previously thought. Basically FF versions after v16 are now almost unusable running NextGen models of any complexity for longer than 30s. See: Firefox Performance Comparison 20131902 and Confirmation of FF […]
For years we have been using several layers of Java, Java Native Interface, and native driver code to support common access to sensors from multiple Probeware interfaces from different vendors. We’ve been calling these layers the org-concord-sensor framework. Our Java/OTrunk framework which has supported many kinds of interactive educational activities uses the org-concord-sensor framework to […]
jsPerf.com lets you write two equivalent ways to accomplish something in JavaScript and it then measures how fast each method is in every browser you run the test in. Other people’s performance tests can be browsed here Browse test cases. Taking a look at a specific test could show data where you might want to […]
Ruby is a powerful and dynamic open-source object-oriented language we have been using extensively at CC in the last few years for the web applications that manage and coordinate authoring and deployment of activities based on the SAIL/OTrunk framework. The standard Ruby VM is written in C and we’ve been using version 1.8.6, the latest […]
The next version of Java being developed is v1.7.0 and the OpenJDK version is being released as open source under the GPL license. I’ve written a wiki page describing how to build and install this new version of Java on Mac OS 10.5.6. Build OpenJDK Java 1.7.0 on Mac OS X 10.5