http://weblogs.java.net/blog/simonis/ en-us 2008-01-24T16:33:59-08:00 http://weblogs.java.net/blog/simonis/archive/2008/01/hotspot_develop_1.html Here comes the second part of "HotSpot development on Linux with NetBeans". While the first part focused on building and running the different flavors (opt/debug, client/server JIT compiler, template/C++ interpreter) of the HotSpot VM on Linux/x86, this second part concludes with a short evaluation of NetBeans 6.0 as an development environment for HotSpot hacking. Community: OpenJDK simonis 2008-01-24T16:33:59-08:00 http://weblogs.java.net/blog/simonis/archive/2008/01/hotspot_develop.html Here comes yet another step-by-step tutorial which explains how to fetch the OpenJDK sources, compile them and work with them inside the NetBeans IDE. It focuses on building and running the different flavors (opt/debug, client/server JIT compiler, template/C++ interpreter) of the HotSpot VM on Linux/x86 and concludes with a short evaluation of NetBeans 6.0 as an development environment for HotSpot hacking. Community: OpenJDK simonis 2008-01-24T16:31:59-08:00 http://weblogs.java.net/blog/simonis/archive/2007/11/template_vs_cin_1.html This blog discusses the main differences between the C++ and the Template Interpreter which are both available within the Hotspot sources of the OpenJDK project. Some performance tests with the DaCapo benchmark suite which compare the two interpreters in mixed and interpreted mode on Linux/x86 and Solaris/SPARC conclude the presentation. Virtual Machine simonis 2007-11-16T03:22:13-08:00 http://weblogs.java.net/blog/simonis/archive/2007/11/testus_interrup_1.html Although JCK tests are not a regression test suite it is probably not uncommon that they (or at least a significant subset of them) are used as automated tests. This blog describes a bug in the test agent of JTHarness that can lead to spurious test failures trough InterruptedExceptions in random tests and simple way to fix the problem. Testing simonis 2007-11-13T12:12:46-08:00 http://weblogs.java.net/blog/simonis/archive/2007/08/topsecret_xinte_1.html Recently I did some benchmarking with the HotSpot and because my program was obviously too slow, I began to browse the HotSpot sources for some secret tuning parameters that could save my day. And indeed, after some digging, I found a real big fish: the "-Xintelligent_as_can_be_execution" option. Virtual Machine simonis 2007-08-30T09:19:41-08:00