Time to measure the Pi

Publication Type:
Conference Proceeding
Proceedings of the ACM SIGCOMM Internet Measurement Conference, IMC, 2016, 14-16-November-2016 pp. 327 - 334
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The Raspberry Pi platform is increasingly being used for network measurement due to its low cost, ease of de-ployment, and ability to run Linux. Timestamps are a critical part of measurement data, yet the suitability of the Pi for timing has not been established. We use ref-erence hardware to characterize the Pi's STC hardware counter, and to evaluate its performance when paired with a low cost yet powerful GPS 'hat'. We find that the platform can support timing adequate for most mea-surement purposes, but with some caveats.
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