{"title":"将固定优先级调度理论应用于安全关键应用的工程实践","authors":"N. Audsley, I. Bate, A. Burns","doi":"10.1109/RTTAS.1996.509517","DOIUrl":null,"url":null,"abstract":"Describes the approach proposed by the York University Technology Centre for introducing fixed-priority scheduling into industrial safety-critical hard real-time systems. The work has been performed within the context of a class A (safety-critical) system as defined by civil aircraft software standard DO178B. Traditionally, class A systems have been scheduled by a cyclic executive. However, many such systems can be re-designed using a fixed-priority scheduler. This saves time and money, with no significant increase in risk. Also, significant technical benefits are apparent. This paper describes the timing requirements of the system, provides a potential scheduling approach (including appropriate timing analysis), and outlines an approach for gathering the necessary evidence for presentation to certification authorities.","PeriodicalId":324830,"journal":{"name":"Proceedings Real-Time Technology and Applications","volume":"7 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1996-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"31","resultStr":"{\"title\":\"Putting fixed priority scheduling theory into engineering practice for safety critical applications\",\"authors\":\"N. Audsley, I. Bate, A. Burns\",\"doi\":\"10.1109/RTTAS.1996.509517\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Describes the approach proposed by the York University Technology Centre for introducing fixed-priority scheduling into industrial safety-critical hard real-time systems. The work has been performed within the context of a class A (safety-critical) system as defined by civil aircraft software standard DO178B. Traditionally, class A systems have been scheduled by a cyclic executive. However, many such systems can be re-designed using a fixed-priority scheduler. This saves time and money, with no significant increase in risk. Also, significant technical benefits are apparent. This paper describes the timing requirements of the system, provides a potential scheduling approach (including appropriate timing analysis), and outlines an approach for gathering the necessary evidence for presentation to certification authorities.\",\"PeriodicalId\":324830,\"journal\":{\"name\":\"Proceedings Real-Time Technology and Applications\",\"volume\":\"7 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1996-06-10\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"31\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Proceedings Real-Time Technology and Applications\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/RTTAS.1996.509517\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings Real-Time Technology and Applications","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/RTTAS.1996.509517","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Putting fixed priority scheduling theory into engineering practice for safety critical applications
Describes the approach proposed by the York University Technology Centre for introducing fixed-priority scheduling into industrial safety-critical hard real-time systems. The work has been performed within the context of a class A (safety-critical) system as defined by civil aircraft software standard DO178B. Traditionally, class A systems have been scheduled by a cyclic executive. However, many such systems can be re-designed using a fixed-priority scheduler. This saves time and money, with no significant increase in risk. Also, significant technical benefits are apparent. This paper describes the timing requirements of the system, provides a potential scheduling approach (including appropriate timing analysis), and outlines an approach for gathering the necessary evidence for presentation to certification authorities.