Re: Current diameter of the Internet?

[Matt Corallo <nanog () as397444 net>]

On 7/19/24 8:44 PM, joel jaeggli wrote:
> On 7/19/24 15:07, Sean Donelan wrote:
> > What is the current estimated diameter of the Internet?
> >
> > Maximum (worst-case) RTT edge-to-edge?
> >
> > Most public latency data is now edge-to-cloud, not edge-to-edge. Cloud engineers have done a great 
> > job, and edge-to-cloud less than 1-sec RTT.
> >
> > Where have the long-slow pipes gone?
> >
> > https://www.cloudping.co/grid
> >
> > https://learn.microsoft.com/en-us/azure/networking/azure-network-latency?tabs=Americas%2CWestUS
> >
> > https://www.verizon.com/business/terms/latency/
>
>
> The RTT across geostationary satellites has remained stubbornly constant we just don't use them 
> unless there's no other alternative. A colleague sent me a trace the other day while flying from 
> hawaii to los vegas that was otherwise performant but still incurs the overhead.

Geosync is probably the highest unloaded latency, but add in a little bufferbloat and you can easily 
get way more latency...I've definitely seen a minute+ pings on a plane, which is almost all queuing. 
I assume airplanes are not the only place with such horrendous queuing, even if most networks have 
done a good job at reducing that nonsense over the last decade.

Matt