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Precisely Timed Task Execution

机译：精确定时的任务执行

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摘要

The Internet of Things (IoT) requires that all components operate on “fresh” data. However, ensuring a low Age of Information (AoI) is challenging, in particular when communicating across the Internet. Achieving a low AoI requires cooperation of networking strategies as well as node-local strategies so that the entire system performs the right operation at the right moment in time. However, most modern operating systems are not designed to provide accurate timing—various low-level overheads cause delays and jitter that affect communication significantly.This paper presents CLOCKFIX, a run-time system for the Linux user-space that executes jobs accurately and precisely at their intended execution times. The evaluation shows that CLOCKFIX reduces undesired delays by more than 95%, and it improves the AoI in a real-world network protocol by over 16%.
机译：物联网（IoT）要求所有组件都在“新”数据上运行。但是，确保较低的信息时代（AoI）具有挑战性，尤其是在通过Internet进行通信时。要实现较低的AoI，就需要网络策略以及节点本地策略的配合，以便整个系统在正确的时间执行正确的操作。但是，大多数现代操作系统都不是为了提供准确的时序而设计的-各种低级的开销会导致延迟和抖动，从而严重影响通信。本文介绍了CLOCKFIX，这是一种用于Linux用户空间的运行时系统，可以准确，准确地执行作业在预期的执行时间。评估显示，CLOCKFIX将不希望的延迟减少了95％以上，并且将实际网络协议中的AoI提高了16％以上。

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