一種計(jì)算混合關(guān)鍵任務(wù)響應(yīng)時(shí)間的新方法

1、Enci Bai, HITWeizhe Zhang, HIT The emerging mixed criticality systemso Due to cost and increased chip computational power, there is an increasing trend in embedded systems towards implementing multiple functionalities upon a single shared computing platform. 11/10/2015ESTC, Beijing11/10/2015ESTC, Be

2、ijingFig. unmanned aerial vehicleLevel 1: the mission-critical functionalities concerning reconnaissance and surveillance objectives, like capturing images from the ground, transmitting these images to the base station, etc.Level 2: the flight-critical functionalities: to be performed by the aircraf

3、t to ensure its safe operation. Scheduling policies, sometimes called schedulers, are the algorithms that control the run-time schedule. Schedulability tests are the algorithms that check before run-time if the deadlines are guaranteed to be met.11/10/2015ESTC, Beijing Partitioned Criticality (PC) I

4、n Partitioned Criticality, priorities are assigned according to criticality Static Mixed Criticality (SMC) Adaptive Mixed Criticality (AMC)11/10/2015ESTC, BeijingThe problem to decide schedulability of a given MC system is NP-hard NP-hard AMC-rtbAMC-maxOur goal is to derive a compromise.11/10/2015ES

5、TC, Beijing system model11/10/2015ESTC, Beijing AMC A task is now defined by: 11/10/2015ESTC, Beijing11/10/2015ESTC, Beijingour way of thinking11/10/2015ESTC, BeijingLOHITime in LO-criticality11/10/2015ESTC, BeijingTime in HI-criticality11/10/2015ESTC, BeijingAMC-PM 11/10/2015ESTC, Beijing Taskset p

6、arameter generation 11/10/2015ESTC, Beijing11/10/2015ESTC, BeijingAcceptance ratio for each utilisation value11/10/2015ESTC, BeijingAcceptance ratio for each utilisation value11/10/2015ESTC, Beijingprocessing time We investigate the issue of response time analysis of mixed criticality systems, and propose a middle way compared with AMC-rtb and AMC-max. The extensive experiments further demonstrate