An Adaptive Buffer Management Algorithm for Enhancing Dependability and Performance in Mobile-Object-Based Real-Time Computing
Fourth IEEE International Symposium on Object-Oriented Real-Time Distributed Computing. ISORC 2001 (2001)
May 2, 2001 to May 4, 2001
May T.W. Ip , Hong Kong Polytechnic University
Wilfred W.K. Lin , Hong Kong Polytechnic University
Allan K.Y. Wong , Hong Kong Polytechnic University
Tharam S. Dillon , Hong Kong Polytechnic University
Dianhui Wang , Hong Kong Polytechnic University
Abstract: In an ORC (object-oriented real-time computing) environment, it is important to reduce message retransmissions during message passing because these retransmissions cause significant time delay. And, this makes it difficult to achieve the necessary timeliness. A cause of retransmission is message loss due to buffer overflow at the reception side. Here a P+I+D (P for proportional, I for integral and D for derivative) adaptive buffer control algorithm is proposed to prevent such possible overflow. The I control depends on the Convergence Algorithm (CA), which is a stable and efficient IEPM (Internet End-to-End Performance Measurement) tool that predicts the mean message roundtrip time (RTT) of a communication channel quickly and accurately. The P+I+D algorithm was tested under different conditions in a mobile ORC (MORC) environment, where mobile agents collaborate freely over the Internet. The different test results confirm that the proposed P+I+D approach is indeed effective for preventing buffer overflow.
MORC, buffer overflow, P+I+D control algorithm, adaptive, Convergence Algorithm.
D. Wang, W. W. Lin, M. T. Ip, T. S. Dillon and A. K. Wong, "An Adaptive Buffer Management Algorithm for Enhancing Dependability and Performance in Mobile-Object-Based Real-Time Computing," Fourth IEEE International Symposium on Object-Oriented Real-Time Distributed Computing. ISORC 2001(ISORC), Magdeburg, Germany, 2001, pp. 0138.