Chapter 4 - DSpace at Waseda University

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Chapter 4
them, the most accurate method is to analyze the text-based data. However, to analyze by the
text-based data has low efficiency in the usage of time. Therefore, in SL, to separate the
problem event logs from a whole event log is a great help to a programmer. Separated data
can be used for an administrator or a developer to have the accurate problem diagnosis
Figure 4.6: Event log separated in SL
Figure 4.6 is event logs when the problem occurred that was separated from the whole event
logs. The method of separation is based on line information that received from DL. By
reading the entire event log from the top to bottom, we can separates event logs that matches
with line information of DL.
Figure 4.7 shows the process flow of SL. After reading result line information (start line and
end line) of DL, SL compares the start line and the whole event log line. After reading the
end line from line information, SL starts the separation work. If line information is read until
the end of the line than KAS executes AL.