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It used to be my coax node was shared by over 200 people, and that was 1 TV channel equivalent of data. Then DOCSIS 2.0 came out and those 200 people were split between roughly 7 TV channels worth of data. This is how you'd get the standard 6-26 mbps home internet.

Then Google Fiber came out and ISPs started running fiber to the streets of most houses, but not running fiber directly to each house. This was in defense of Google Fiber, so they could switch people to fiber gigabit easily with little transition. Now there is DOCSIS 3.0 which does channel bonding, so a single person can have up to the equivalent of 32 TV channels of data, getting up to 1.2 gbps if unshared. Today, the average home shares their bandwidth with between 0 and 3 other houses. The fiber is right outside. If you order gigabit cable internet they will run the fiber to your front yard but not let you connect to it directly.

On comcast the lowest speed you can order where you get fiber internet is 2gbps, and because DOCSIS 3.1 now allows 10+ gbps cable internet, Comcast fiber may become a thing of the past. In a way, DOCSIS 3 has been a set back for consumers. Sure you can get multi 100mbps even gbps internet, but it allows cable companies to not have to run fiber that last 30 feet.

With fiber your ping time is lower, so your internet feels quite a bit faster. Fast internet today isn't mbps, it's ping time.




> With fiber your ping time is lower, so your internet feels quite a bit faster. Fast internet today isn't mbps, it's ping time.

Two thoughts about this:

1. On 100/10 coax, ping times to 1.1.1.1, 8.8.8.8, and 9.9.9.9 are all under 20 msec. What could a lower last mile latency possibly get me? Even cutting it to zero would seemingly not make a noticeable difference for page load times and the like.

2. I really wish this speed test measured your real latency, but it does not. It tests for latency pre-load, not during the load. Because of bufferbloat, most users will find that when they're downloading a file (whether that's someone on Netflix, or fetching a 2 MB image for a news article) their latency goes up dramatically, possibly hitting in the hundreds of msecs. It's really regrettable that this test doesn't try to measure this in any way. Fast.com does, but it's the only free test I can find that does.

After a lot of tinkering, I managed to get my latency under load down to 50 msecs without a significant drop to my maximum speeds, but this required quite a lot of tinkering with queue management on a BSD based router, and I suspect most people will see worse results.


On Comcast my ping time is 16ms to a lot of websites. On AT&T fiber at the same speed (gigabit) it's 1.5ms.

On fiber when I'm downloading at the full 126 MB/s my ping barely goes up, unlike on cable.




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