Dipl.-Ing. Dr. Philipp Lengauer Johannes Kepler Universität Institut für Systemsoftware Altenberger Straße 69 4040 Linz, Austria

Teaching

• Lectures
  • 2017S: Praktikum aus Softwareentwicklung 2 (Software Development 2)
    
  • 2017S: Java Performance Monitoring and Benchmarking
    
  • 2017S: Praktikum aus Software Engineering (Project in Software Engineering)
    
  
  
  • 2016W: Übersetzerbau Übung (Compiler Construction)
    
  • 2016S: Praktikum aus Softwareentwicklung 2 (Software Development 2)
    
  • 2016S: Java Performance Monitoring and Benchmarking
    
  • 2016S: Praktikum aus Software Engineering (Project in Software Engineering)
    
  • 2015W: Übersetzerbau Übung (Compiler Construction)
    
  • 2015S: Praktikum aus Softwareentwicklung 2 (Software Development 2)
    
  • 2015S: Java Performance Monitoring and Benchmarking
    
  • 2014W: Übersetzerbau Übung (Compiler Construction)
    
  • 2014S: Praktikum aus Softwareentwicklung 2 (Software Development 2)
    
  • 2014S: Praktikum aus Software Engineering (Project in Software Engineering)
    
  • 2013W: Übersetzerbau Übung (Compiler Construction)
    
  • 2013S: Praktikum aus Softwareentwicklung 2 (Software Development 2)
    
• Supervised Master's theses
  • Agent for Go - Michael Obermüller (in progress)
  • Heap and Object Lifetime Visualization in a Memory Monitoring System - Christina Rammerstorfer (completed)
  • Assigning Precise Allocation Events to a Sampled Call Context Tree - Stefan Wurzinger (in progress)
  • User-defined Visualizations for AntTracks - Markus Weninger (completed)
  • Lightweight Allocation Tracking for Java Applications - Stefan Fitzek (completed)
  • Interactive Feedback for Programming Courses - Anamaria-Iulia Pascu (aborted)
  • Refinements and Extensions for Ant Tracks to Support Multiple Garbage Collectors - Johannes Pichler (aborted)
  • Post-Mortem Memory Profiling for Java Applications - Verena Bitto (completed)
  • jSpyder - A Profiling API for Java - Martin Lettner (completed) (originally supervised by Reinhard Wolfinger, original assignment)
• Supervised Bachelor's projects and theses
  • AntTracks Support for Hotspot's Concurrent Mark & Sweep GC - Christian Niederer (completed)
  • Improving On-the-fly Compression in AntTracks - Daniel Hinterreiter (completed)
  • Feature Support for AntTracks - Patrick Schöppl (completed)
  • Archie: Automatic Analysis of Support Archives - Dominik Steinbinder (completed)
  • An Instrumentation-based Reference Implementation for Ant Tracks: Agent Infrastructure - Dominik Aumayr (completed)
  • An Instrumentation-based Reference Implementation for Ant Tracks: Instrumentation - Michael Popovtschak (completed)
  • An Instrumentation-based Reference Implementation for Ant Tracks: Graphical User Interface - Michael Obermüller (completed)
  • A Benchmark Suite to Evaluate the Bottlenecks of Ant Tracks - Christina Rammerstorfer (completed)
  • An Experiment to Measure the Performance Trade-off between Traditional IO and Memory-mapped Files - Markus Weninger (completed)
  • An IDE Plugin to assign Source Code to Features and Generate a Feature-to-Code Mapping - David Pfeffer (completed)
  • Optimizing GC Parameters with the Heuristic Lab - Erik Reindl (completed)
  • Visualization and Analysis of Parameter Opimization Logs - Peter Plaimer (completed)
  Feel free to contact me concerning Bachelor or Master Thesis Topics.


• Workshops for Children
  • Tomorrow's Experts in Computing (TEC) - JavaFX Game Programming
  • Young Computer Scientists (YCS) - JavaFX Game Programming
  • Kinder Uni Linz - Wie Computer den kürzesten Weg finden: Algorithmen zur Routenoptimierung

Research Interests

• Virtual Machines, Memory Management, Garbage Collectors, Performance Monitoring, ...
• Component-based Architectures, Debugging, Testing

Current Projects

• AntTracks

Publications

• Accurate and Efficient Memory Monitoring in a Java Virtual Machine, Dissertation, Johannes Kepler University, Linz, 2017 (AntTracks VM and Tool)
• A Comprehensive Java Benchmark Study on Memory and Garbage Collection Behavior of DaCapo, DaCapo Scala, and SPECjvm2008, in the Proceedings of the 8th ACM/SPEC International Conference on Performance Engineering (ICPE'17), L'Aquila, Italy, 2017 (accepted for publication)
• User-centered Offline Analysis of Memory Monitoring Data, in the Proceedings of the 8th ACM/SPEC International Conference on Performance Engineering (ICPE'17), L'Aquila, Italy, 2017 (accepted for publication)
• DuckTracks: Path-based Object Allocation Tracking, in the Proceedings of the 8th ACM/SPEC International Conference on Performance Engineering (ICPE'17), L'Aquila, Italy, 2017 (accepted for publication)
• Efficient Memory Traces with Full Pointer Information, in Proceedings of the 13th International Conference on Principles and Practices of Programming on the Java Platform: Virtual Machines, Languages, and Tools (PPPJ'16), Lugano, Switzerland, 2016
• Efficient and Viable Handling of Large Object Traces, in Proceedings of the 7th ACM/SPEC International Conference on Performance Engineering (ICPE'16), Delft, Netherlands, 2016
• Building Custom, Efficient and Accurate Memory Monitoring Tools for Java Application in the Proceedings of the 7th ACM/SPEC International Conference on Performance Engineering (ICPE'16), Delft, Netherlands, 2016
• Building Custom, Efficient and Accurate Memory Monitoring Tools for Java Application Tutorial at the 7th ACM/SPEC International Conference on Performance Engineering (ICPE'16), Delft, Netherlands, 2016
• Time Matters: Minimizing Garbage Collection Overhead with Minimal Effort, in Proceedings of the 6th Symposium on Software Performance (SSP'15), Munich, Germany, 2015
• Efficient Rebuilding of Large Java Heaps from Event Traces, in Proceedings of the 12th ACM International Conference on Principles and Practice of Programming on the Java Platform: virtual machines, languages, and tools (PPPJ'15), Melbourne, FL, USA, 2015
• Accurate and Efficient Object Tracing for Java Applications, in Proceedings of the 6th ACM/SPEC International Conference on Performance Engineering (ICPE'15), Austin, TX, USA, 2015
• The Taming of the Shrew: Increasing Performance by Automatic Parameter Tuning for Java Garbage Collectors, in Proceedings of the 5th ACM/SPEC International Conference on Performance Engineering (ICPE'14), Dublin, Ireland, 2014
• Where Has All My Memory Gone? Determining Memory Characteristics of Product Variants using Virtual-Machine-Level Monitoring, in Proceedings of the 8th International Workshop on Variability Modelling of Software-intensive Systems (VAMOS'14), Nice, France, 2014
• VM-Level Memory Monitoring for Resolving Performance Problems, in Proceedings of the ACM Conference on Systems, Programming, Languages and Applications: Software for Humanity (SPLASH'13), Indianapolis, IN, USA, 2013
• Trace-based Debugger for Dynamically Composed Applications (Master's thesis), JKU, 2012
• Erweiterung des Coco/R Plugins für NetBeans um syntaktische und semantische Codevervollständigung (Bachelor's thesis), JKU, 2010