141–150 of 223 posts
Random fact: I did some planning around this for a client a while ago. While measuring the AWS latencies I found I could get approximate latencies (within 10%) by measuring the rough undersea cable length (km) and dividing by 150. While not overly surprising, it was very consistent. Edit: I think it was actually 155
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The routing paths traveling via ground stations, you mean? My understanding is that they were experimenting with improvements to this, they just haven't deployed anything yet.
No, even with proposed inter-satellite routing paths, they are too slow. The trading industry has very much done the math on this. The comparison is against radio and hollow-core fiber, not conventional fiber.
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Author here. This is great feedback, thanks.
I appreciate the effort to collect the data, but I think the rotating globe is an idea that looks cool, but makes the visualization harder to use. If I click on us-east-1, there's a 229ms line to...somewhere that I can't see. Meanwhile, I can't see the latency between us-east-1 and us-east-2. Perhaps if you selected a datacenter, and it switched to a 2-d projection with that datacenter at the center of the map, it wo…
(One of several options, though the best IMO.)
https://en.wikipedia.org/wiki/Winkel_tripel_projection>
It would be really cool if it didn't just show the ping, but how much worse it is compared to the theoretical optimum (speed of light in fiber optic medium, which I believe is about 30% slower than c). I raise this because I've been in multiple system architecture meetings where people were complaining about latency between data centers, only to later realize that it was pretty close to what is theoretically possible…
You would have to map out the cables to do that. Light in fiber optic cable travels roughly 70% of the speed of light ~210,000 km/s Earth's circumferences is ~40,000 kilometers. Direct route from the other side of Earth to another would be roughly 100 milliseconds, round trip 200 ms.
It's cool you can look at 1/2 of the earth and see only one data center and one link. ap-southeast-2 and it's only link is too far away to show.
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No, even with proposed inter-satellite routing paths, they are too slow. The trading industry has very much done the math on this. The comparison is against radio and hollow-core fiber, not conventional fiber.
Laser links between satellites have been active since late 2022, or was there some additional improvement you're referring to?
Just curious, why is there no us central or us texas region? It could maybe be useful.
Azure has Ohio and Texas, but you'll probably not be able to provision all the machines you want so it doesn't really matter. I think a lot of people are sleeping on the benefits of hosting workloads in these regions. Many finance, banking & insurance companies have already taken advantage. Most of your credit card transactions are handled by data centers that live ~barycentric to the continental US. Much of small US…