Apparatus for log data collection and analysis

Details Apparatus for log data collection and analysis Apparatus for log data collection and analysis

1996-09-18

1998-10-06

Voeltz, Emanuel Todd

G06F 945

Patent

active

058190945

ABSTRACT:
An apparatus for log data collection and analysis, which provides a history diagram to visualize program behavior and enhanced tools for analysis by utilizing part-to-part association between the history diagram and a source program. A log data collector collects log records during program execution and stores them in a storage unit. A log data analyzer retrieves and analyzes the records to find the types of program operations and their respective execution time. A diagram generator converts the result of the analysis into a history diagram and outputs it to a display unit. The apparatus further comprises an on-screen position designator and program location analyzer. When a user selects a part of the history diagram, the on-screen position designator obtains its coordinate. The program position analyzer analyzes the coordinate to find a corresponding function and its location in the source program, thus allowing the user to get a function name and line number by simply specifying a part of the history diagram. Moreover, the apparatus comprises a function designator and display position analyzer. When the user specifies a function name and its line number through the function designator, the display position analyzer calculates a corresponding position in the history diagram. Thus, the user can easily locate records of a function of interest in the history diagram.

REFERENCES:
IBM Technical Disclosure Bulletin, vol. 38, No. 03, Mar. 1995, Improving Performance of Trace Analysis Using Visual Editing Functions.
Elektronk Dec. 1995, p. 118-123, "The Diagnosis of Individual Tasks by Tracing" (including Abstract).

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