Object-Reuse for More Predictable Real-Time Java Behavior

One of the problems with Java for real-time systems is the unpredictable behavior of garbage collection (GC). GC introduces unexpected load and causes undesirable delays for real-time applications. In this paper, we propose a technique that reduces and bounds the memory requirements for real-time Java programs. This technique can eliminate or reduce the need for GC and allows for a more predictable execution behavior and efficient utilization of the available memory. A theoretical model is presented and a number of benchmark tests are used to evaluate this technique in PERC, NewMonics’ realtime JVM, and Sun’s JVM. The results show that in some cases GC can be eliminated and an application’s execution time decreases and becomes more predictable.

• Type: Conference
• Year: 2005
• Where: ISORC
• Authors: Jameela Al-Jaroodi, Nader Mohamed
• Keywords: ISORC 2005, Predictable Execution Behavior, Real-time, Real-time Java Programs, Software Engineering