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From: Dave Taht <dave.taht@gmail.com>
Date: Mon, 17 Dec 2018 19:42:20 -0800
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To: bloat <bloat@lists.bufferbloat.net>,
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Subject: [Bloat] bbr vs cubic network performance on high speed rail networks
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It's really weird to worry about throughput and latency at 300km/h vs
350km/hr, being as the fastest US train I've ever been on rarely
cracks 100kph.

https://arxiv.org/pdf/1812.04823.pdf - the handover bit (section 5.2
and later) was pretty interesting.

Round-trip-time (RTT). As shown in Fig. 6, BBR has more than twice
lower RTTs than CUBIC (e.g., 191.53 ms versus 431.35 ms at 300 km/h,
and 148.63 ms versus 345.02 ms at 350 km/h for median value) due to
their different CCA design rationales: BBR intends to suppress the RTT
to overcome the bufferbloat problem [24


--=20

Dave T=C3=A4ht
CTO, TekLibre, LLC
http://www.teklibre.com
Tel: 1-831-205-9740