Basic Parameters That Affect The Performance - 1243 Words

7. Basic Parameters That Affect The Performance in RTOS 7.1 Multi-tasking and preemptable: In RTOS the system have to be multitasking and preemptable because those two features make the RTOS Scheduler end any lower priority task to execute the higher ones or to release some resources for other tasks that urgently need those resources. Also the system have to handle different level of priorities of interrupts.(Yerraballi,R. 2000) 7.2 Dynamic deadline identification: In some scheduling algorithms such as (EDF)the deadline is converted to priority levels. Then we can control priorities by controlling the deadlines.†Although such an approach is error prone, nonetheless it is employed for lack of a better solution†(Buttazzo, 2005). 7.3 Predictable synchronization: The threads of the system need to communication and to be synchronized in a timely efficient and predictable way. 7.4 Sufficient Priority Levels: In the scheduling algorithms based on priorities. There must be enough levels of priorities. Priority inversion occur when a low level priority hold the resource that the the high level priority is waiting for or blocked due to this resource, and the lower priority is delayed because low priority task. â€Å"Two workarounds in dealing with priority inversion, namely priority inheritance and priority ceiling protocols (PCP), need sufficient priority levels.† 7.5 Predefined latencies: The timing of the systems must be predictable and this is done by defining task switchingShow MoreRelatedTaguchis Design Of Experiments Analysis792 Words   |  4 Pagesmethodologies have been effectively utilized to conduct the experiments in a scientific manner, one is Taguchi’s Design of Experiments (DOE) and other method of design of experiments were based on randomly selected combination of cutting process parameters is shown below figure. 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