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Old 10-16-2020, 10:46 AM
 
Location: WMHT
4,569 posts, read 5,676,571 times
Reputation: 6761

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Quote:
Originally Posted by markjames68 View Post
Quote:
"Across their footprint, the average latency on Viasat Internet speed tests is 3.07ms. In context, terrestrial connections generally perform in the 5–70ms range"
There is no way Viasat satellite internet has 3ms latency. No way at all. It is physically IMPOSSIBLE. I’m on fiber and I have around 8-9ms latency which is phenomenal.
. . .
So it is impossible with today’s satellites to get latency less than 250ms.

Even their own website shows differently than 3ms.
The 3ms result may be a result of how Hughes/Exede/Viasat "cheat" at TCP/IP networking; that's the time from the speedtest server to their earth-based satellite station, which sends a fake "ACK" response to the server before it even sends the packet up to the satellite.

Viasat calls theirs "AcceleNet", it can actually improve speed for web pages, but messes with VPNs and other tunnels.
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Old 10-16-2020, 12:03 PM
 
23,602 posts, read 70,446,439 times
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OK, right now I have exceeded my data cap for the month and am being connected at reduced speed. That may or may not affect ping time.

The following tests are done from my laptop over an older wifi to an access point, which then connects to an older router, which then goes through the phone wedge that provides my phone service, and only then to the modem and transponder. Obviously, there are avenues of delay in that mess, and I'm not about to buy a new 'puter and hook directly to the modem to test.

If you will look through my posts on the subject, my point is simply that a two second delay on a phone conversation, as Larry claimed, is bullcrap. I described what talking on my phone, which goes through the first Viasat satellite, is like. That is real life, real world experience, and there is NO two second delay - period, end of story. No talking out my wazoo based upon hearsay, as is so common these days.

this first test, from the site I referenced, I don't particularly trust.
https://broadbandnow.com/speedtest/9...2-c9897fa51ba2
The fake [ACK] sounds like a reasonable explanation for the low latency. I'll agree with that idea.

Speedcheck.org gives an average over 3 tests of 946, but I don't trust that test site either, as is says my upload speed is way faster than it actually is in restriction.

Speedtest by Ookla gives 678 or 677 fairly consistently

https://www.speedtest.net/result/10260969248

That seems reasonably on target, especially as it reflects my general daytime experience browsing. It has been a while since I've done speed tests, but I recall some from there with significantly lower readings, especially at off-peak hours.

Now - on phone connection - Viasat/Exede handles it a little differently. The company geeks know that any delay is going to result in complaints, and phone traffic bandwidth is minimal and a good source of added revenue. In response, Viasat does the phone tap as a wedge, even before any router, and prioritizes the phone traffic. My ping can be slow, but the phone still acts normal. That would NOT be the case if I used a Google number, Skype, or other internet phone provider on the Viasat link.

Again, phone over a satellite works fine. In a disaster, such as tornado or hurricane or cut of a fiber, all of the land lines and VOIP using fiber could be down, but mine continues merrily along. If the satellite finds the local NOC is out, it goes for a different one outside of the disaster area. My outages come from any immediate storm with high clouds just to the west of me, and the maintenance outages on the satellite. That can be an issue, but it is one I live with.

FWIW, the general latency for internet is only a minor inconvenience for me, as I have cross wired nerves and a slow twitch response which means I would automatically lose at online games if I ever played them.

[Edit to add] Just used my VPN and the ping went up to 720-750 range. In case there are questions about how the predictive stuff Viasat uses might throw off tests. Through the VPN, such tricks get disabled.

Last edited by harry chickpea; 10-16-2020 at 12:14 PM..
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Old 10-16-2020, 07:37 PM
 
14,394 posts, read 11,260,071 times
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600-700 sounds about right. So you’re talking about 1/3 of a second delay, which is generally not noticeable in a 2 way conversation.

Even a cell phone conversation has a minimum of around 50ms latency. I’d imagine a cell to cell conversation would double it...and I can’t recall that ever being noticeable either.

https://www.statista.com/statistics/...7-by-provider/
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