A system for visualizing and debugging distributed real-time systems with monitoring support

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Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/29211

Title:	A system for visualizing and debugging distributed real-time systems with monitoring support
Authors:	Tsai,JJP;Bi,YD;Yang,SJH
Contributors:	資訊工程研究所
Keywords:	CLOCK SYNCHRONIZATION;SAFETY ANALYSIS;PROGRAMS;SPECIFICATION;ALGORITHM;EXECUTION;PARALLEL;REPLAY
Date:	1996
Issue Date:	2010-06-29 20:16:28 (UTC+8)
Publisher:	中央大學
Abstract:	Based on system execution traces, this paper presents a dynamic approach for visualizing and debugging timing constraint violations occurring in distributed real-time systems. The system execution traces used for visualization and debugging are collected during the execution of a target program in such a way that its run-time behavior is not interfered with. This is made possible by our non-interference distributed real-time monitoring system which is capable of collecting system's run-time traces by monitoring and fetching the data passing through the internal buses of a target system. After the run-time data has been collected, the visualization and debugging activities then proceeded. The timing behavior of a target program is visualized as two graphs - the Colored Process Interaction Graph (CPIG) and the Dedicated Colored Process Interaction Graph (DCPIG). The CPIG depicts the timing behavior of a target program by graphically representing interprocess relationships during their communication and synchronization. The DCPIG can reduce visualization and debugging complexity by focusing on the portion of a target program which has direct or indirect correspondence with an imposed timing constraint. With the help of the CPIG and the DCPIG, a timing analysis method is used for computing the system-related timing statistics and analyzing the causes of timing constraint violations. A visualization and debugging system, called VDS, has been implemented using Open Windows on Sun-4's/UNIX workstations.
Relation:	INTERNATIONAL JOURNAL OF SOFTWARE ENGINEERING AND KNOWLEDGE ENGINEERING
Appears in Collections:	[Graduate Institute of Computer Science and Information Engineering] journal & Dissertation

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