Copper is Faster than Fiber (2017) [pdf]

原始链接: https://www.arista.com/assets/data/pdf/Copper-Faster-Than-Fiber-Brief.pdf

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A Hacker News thread discusses a paper claiming copper is faster than fiber for short distances (under 5m). Commenters generally agree, citing the overhead of the PHY layer in fiber optic connections for short runs. One commenter notes that Arista, the paper's source, built its initial reputation in low-latency environments like high-frequency trading, making the finding unsurprising. Concerns are raised about real-world scenarios, including potential increases in line error rates and crosstalk issues with multiple copper cables. Another user points out the claim is primarily about latency, not bandwidth, and expresses mild annoyance at the potential for misinterpretation. The discussion also mentions Arista's history and its co-founder Andy Bechtolsheim's connection to Google.

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