松弛时间slack(裕度laxity)、WCE D Si R siacki=di-f 延迟Lateness:=f'-d AET (Actual Execution Time) siack 2 {1) Task Task ■■■■■■■■■■■■ 0 Deadline=Period BCET (Best Case Execution Time)WCET (Worst Case Execution Time)松弛时间slack(裕度laxity)、WCET 延迟Lateness=f ‘– d f' L UnRegistered