Chapter 4 - DSpace at Waseda University
Chapter 4 - DSpace at Waseda University
Chapter 4 - DSpace at Waseda University
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<strong>Chapter</strong> 4<br />
4.2.3 Analysis Layer<br />
Figure 4.7: Process flow of Separ<strong>at</strong>ion Layer<br />
Normally, a log is provided by analysis tools but they do not analyze problems. However,<br />
Analysis Layer (AL) of KAS does not accur<strong>at</strong>ely analyze the cause of the problem. Analysis<br />
is a job of an administr<strong>at</strong>or or a developer. However, by analyzing the result of AL, it is<br />
possible to find out where, why, and when the problem has occurred. To do this, it is possible<br />
by using the st<strong>at</strong>istics inform<strong>at</strong>ion done in AL. Figure 4.8 shows the process flow of AL. First,<br />
based on the result from DL and SL, AL reads the result of DL and the result of SL. Next, it<br />
checks how many times each event has occurred and their execution time. Also, it calcul<strong>at</strong>es<br />
and saves the l<strong>at</strong>ency time of the occurred problem in event logs. Of course, if a developer or<br />
an administr<strong>at</strong>or needs more inform<strong>at</strong>ion than mentioned in this thesis, we can take needed<br />
inform<strong>at</strong>ion by the modific<strong>at</strong>ion program of AL.<br />
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