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首页> 外文会议>International Conference on Embedded Software and Systems(ICESS 2005); 20051216-18; Xi'an(CN) >Elimination of Non-deterministic Delays in a Real-Time Database System
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Elimination of Non-deterministic Delays in a Real-Time Database System

机译：消除实时数据库系统中的不确定性延迟

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摘要

In a real-time database system, the conventional method of transaction method can not be used. In these methods, the deadlock detection is based on (a) use of delay to cause and watch deadlocks, (b) high overheads of periodic checking (c) Non-deterministic nature of the delays, and lastly, (d) difficulties to scale up the existing solutions (centralized). The proposal is based on enhanced local processing and peer-to-peer (P2P) communication for distributed transaction process. The earlier procedures incorporate additional steps for handling wait-for states and deadlocks. This activity is carried out by methods based on wait-for-graphs or probes. These methods introduce a centralized computation at source (for each occurrence of a delay). The proposal introduces asynchronous operations in transaction processing. As a result the detection processes do not wait for occurrences of delays (time-out). These start the delay elimination process instantaneously. The technique incurs low overheads and eliminates the possibility of occurrence of waiting.
机译：在实时数据库系统中，不能使用常规的事务处理方法。在这些方法中，死锁检测基于（a）使用延迟来引起并观察死锁，（b）定期检查的高开销（c）延迟的不确定性，最后是（d）扩展难度现有的解决方案（集中式）。该提案基于增强的本地处理和用于分布式事务处理过程的对等（P2P）通信。较早的过程包含处理等待状态和死锁的其他步骤。通过基于等待图或探测的方法来执行此活动。这些方法在源头引入了针对每个延迟的集中计算。该提案在事务处理中引入了异步操作。结果，检测过程不会等待延迟的发生（超时）。这些立即启动延迟消除过程。该技术产生较低的开销，并消除了发生等待的可能性。

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