March 12-14, 2018 - Portland, OR
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Tuesday, March 13 • 4:20pm - 5:10pm
A Solution to High Latencies Caused by I/O - Paolo Valente, Linaro

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The BFQ I/O scheduler has made its way into the Linux kernel, bringing high responsiveness, low latency for time-sensitive applications, and strong fairness. These improvements are particularly beneficial for embedded systems, given the slower speed and the higher latency of the storage devices of these systems. Yet, some year may pass before major OSes for embedded systems, notably Android, will run recent-enough versions of the Linux kernel to enjoy these improvements. In this presentation, we show the benefits to come (or already available in systems running recent kernels), and compare them with the current latency and unfairness problems of Linux-based embedded systems. In particular, we show these facts through demos and numbers for real hardware.

avatar for Paolo Valente

Paolo Valente

Assistant professor, University of Modena and Reggio Emilia
Paolo Valente is an Assistant Professor of Computer Science at the University of Modena and Reggio Emilia, Italy, and a collaborator of the Linaro engineering organization. Paolo's main activities focus on scheduling algorithms for storage devices, transmission links and CPUs. In... Read More →

Tuesday March 13, 2018 4:20pm - 5:10pm PDT
Grand Ballroom I