While the real-time systems community has developed very valuable approaches to timing and scheduling analysis for processors and buses over the last four decades, another very relevant issue has received only limited attention: end-to-end timing. Most of the known work poses restrictions on specific task activation and communication mechanisms, e.g. unbounded FIFO queues along event-triggered ...

This letter presents an experimental evaluation of end-to-end delay in Sigfox networks, considering measurements from the transmitter to server. We carried out two types cases. The first was a static experiment with typical delivery time ranging between 2.5 and 4.5 seconds, 100% rate. second considers mobility, experiments mostly rural environments which is inside car. In this case, we observed...

This paper presents an evaluation of the impact of the so-called OS latencies on the performance of a synchronous network based on global time coordination. The concept of end-to-end latency is first defined, by extending the concept of latency used to evaluate the performance of real-time systems, and the end-to-end latency provided by a general-purpose OS is measured as a benchmark. Finally, ...

In this paper, we investigate several distributed real-time applications. The applications are real-time in that they require per-connection end-to-end performance bounds. These bounds, in terms of throughput, delay, and delay-jitter, are provided by the network via two mechanisms: admission control to limit access to the network and priority scheduling to enforce the guarantees. Within this fr...