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Your "Round" product claims "<100ms latency from San Francisco to Tokyo."

Given that even fast connections between SF and Tokyo average around 110ms (1), is < 100ms an arbitrary goal that has been pulled out of thin air, or are you deploying new technology that's faster than a typical fiber connection?

1) https://wondernetwork.com/pings/San+Francisco/Tokyo



We're built on top of Agora at the moment. We saw some super promising numbers in the sub-100 range but I didn't thoroughly test. Their SD-RTN whitepaper(1) makes claims nowhere near that bold, so I will update accordingly

1) https://hello.agora.io/rs/096-LBH-766/images/Agora_WP_SD-RTN...


Thanks for your detailed response!


Your source says its numbers are "generated with the unix command line tool ping", which reports round trip time.

In fiber, with light traveling at about (2/3) * c, the minimum latency from SF to Tokyo would be about 42 ms.


Those are point-to-point pings between data centers.

The physical fiber optic floor from SF to Tokyo is about 50ms, point-to-point, with no sub-fiber last miles, wifi access points, or delay from routers and switches.

Actual user-to-user latency is much higher than that. Agora, for example, cites:

> Low latency, 400ms average globally




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