The CHOOSE executive board and the Software Composition Group of the University of Berne are pleased to invite you to a presentation. ------------------------------------------------------------------------ Portable and Efficient Profiling for the JVM Using Bytecode Instrumentation =========================================================================== When: Tuesday November 22, 2005, @17h15 Where: Institut für Wirtschaftsinformatik (IWI), Universität Bern, Engehaldenstrasse 8, 3012 Bern, Hörsaal 001 Travel instructions: http://www.iam.unibe.ch/~scg/Resources/Maps/ Speaker ------- Dr. Walter Binder, Laboratoire d'intelligence artificielle, EPFL Agenda ------ 17h15 - 18h15 Talk and Q/A Afterwards you are invited to a refreshment. Abstract ======== Profiling complex, Java-based systems, such as e.g. middleware for service-oriented computing, is a tedious task, because most available profilers for Java cause excessive overhead or are not accurate enough. For instance, the exact profiler delivered with standard JDKs may cause overhead up to factor 4000, while the complementary sampling profiler does not generate accurate profiles. As another drawback, existing profiling support in standard JVMs require profiling agents to be written in native code, contradicting the Java motto "write once, run anywhere". In this talk I present a novel profiling framework for Java, which relies on bytecode instrumentation. The framework includes an exact profiler as well as a sampling profiler. Both of them support dynamic metrics that are related to the execution of bytecode instructions. Such metrics have the advantage of being platform-independent, resulting in reproducible profiles and reduced measurement perturbation. The profiling tools are fully portable and can be customized by user-defined profiling agents, which may be written in pure Java. Experiments show that our exact profiler causes significantly less overhead than a prevailing one and that our sampling profiler reconciles moderate overhead with high profile accuracy. Bio === Dr. Walter Binder is a researcher at the Artificial Intelligence Laboratory at EPFL since February 2003. He holds a M.S. (1997) and a Ph.D. (2001) in computer science from the Vienna University of Technology. Prior to his work at EPFL he worked for a software engineering company in Vienna, where he developed among other things the J-SEAL2 mobile object kernel, a Java-based component system offering operating system functions, strong security mechanisms, and support for mobile code. He also initiated the development of a resource management framework for Java. Moreover, he developed a Java-based operating system for embedded devices offering a high level of security and supporting remote maintenance and software deployment through mobile code. The focus of his recent research is on portable and accurate profiling techniques for virtual execution environments and on middleware for service-oriented computing. Walter Binder has published more than 40 refereed papers on his work. He received the Dimitris N. Chorafas Foundation 2000 Prize for Internet and Information Science. ----------------------------------------------------------------------- This event is free even the drinks after the talk! Non-CHOOSE members are encouraged to fill out the membership application form (http://www.s-i.ch/si-appl.html) before attending the meeting. If you want to know more about CHOOSE and the events which CHOOSE organises, please visit http://www.choose.s-i.ch/. NOTE: registration for this event is required because we have to prepare the apero. Please fill out the registration form at the end of this e-mail. REGISTRATION ------------ Please DO NOT reply to this e-mail! Fill in the form below and sent it to <mailto:choose@glue.ch>. Thanks. I want to register to the following event: Java Profiling Name: ______________________________________ Email: ______________________________________ Company: ______________________________________ Address: ______________________________________ ZIP/City:______________________________________ Please check: [ ] CHOOSE member [ ] JUGS member [ ] SI member [ ] Non-Member choose-news(a)iam.unibe.ch is a *moderated* mailing list for announcing non-commercial events related to Object Technology in Switzerland. Please send announcements to be posted to: choose-news(a)iam.unibe.ch To unsubscribe, please send the message "unsubscribe choose-news" to: Majordomo(a)iam.unibe.ch To learn more about SI and CHOOSE, see: http://www.choose.s-i.ch/