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> 5<br />
Figure 5.6 Interface of setitimer<br />
Figure 5.7 set up setitimer<br />
Figure 5.7 shows how setitimer oper<strong>at</strong>es. Setitimer establishes two time values. it_value<br />
sets the first period of oper<strong>at</strong>ion and it_interval sets the value of oper<strong>at</strong>ion time after the first<br />
period.<br />
We set<br />
tick<br />
HRT as 100μs and 1ms and set the cycle of repetition as 100,000 with heavy<br />
background load. Figure 5.8 shows the repetition process when HRTimer period is set to<br />
100μs. From first period to n-th period it is oper<strong>at</strong>ed continuously and when measuring every<br />
cycle calcul<strong>at</strong>ed the HRTimer l<strong>at</strong>ency separ<strong>at</strong>ely.<br />
Figure 5.8 Periodic process of HRTimer is set by 100μs<br />
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