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waltaki2020-08-20 15:49:05
Computer networks
waltaki, 2020-08-20 15:49:05

How to get the minimum ping between Moscow and Helsinki?

Maybe there are some traffic points to which you can connect?
Now I have ~43ms ping from Moscow to Helsinki. At ya.ru (by SP) it is 1-3ms. I ping 1 specific ip from both Moscow and Helsinki.
They either have their own channels, or they rent from someone. But where?

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7 answer(s)
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iddqda, 2020-08-20
@waltaki

It is theoretically possible to reduce ping by a third
It is known that the speed of light in an optical fiber is 0.69 s (c is the speed of light)
In addition, the optical fiber is usually not laid along the shortest distance,
Although in the section between Moscow and St. Petersburg, the optics are buried along the railway, which Nicholas I drew with a ruler , so there's not much to win here
. So we need a radio channel. Firstly, the speed in the air is close to c,
and secondly, this way we get the minimum distance along the shortest path.
The only point is that we need to take into account the curvature of the earth.
Unifi has such a cool utility https://link.ui.com
using it we calculate the height at which you need to install radio transmitting devices:
5f3e76e7610c4801338493.png
It turns out that in order to reduce ping by a third, it is enough to build radio towers 15,500 meters high in Moscow and Helsinki. However, for the first time, you can get by with balloons.
And by the way, this will not be the shortest distance.
For the shortest, we need to dig a completely straight tunnel right through the thickness of the planet.
But I'm afraid at this stage in the development of science and technology, this project is impossible.

1
15432, 2020-08-20
@15432

1000km distance, 40ms ping is great. You won't do less.
The fact that Yandex has 1ms is clearly a local server somewhere near you.

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Ilya Efimov, 2020-08-20
@A_M

Or they have a server in Helsinki. 3ms is very close.

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Stalker_RED, 2020-08-20
@Stalker_RED

If you have fiber running the most direct route, you should be able to get a ping of around 5.2ms. On the radio channel, you can get a ping about one and a half times lower, iddqda painted everything beautifully.
The main problem is not in the channel itself, but in the delays on the routers. It is they who eat 30-35 ms out of your 43. To reduce the number of intermediate nodes, try to conclude an agreement with the backbone provider and knock out "special" connection conditions from them.

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pfg21, 2020-08-20
@pfg21

distributed servers with geodns.
and ya.ru servers are very close to the requesting address.
Yandex is capable of a huge commercial Yandex cloud, so it undoubtedly has a large number of servers in different geopoints of the country and the ball.

L
Lyoshik, 2020-08-20
@Kot1que

I have a ping from St. Petersburg to a server in Helsinki (hetzner) 7 ms (route via dataix), a ping to a server in Moscow - 10 ms. It turns out that somewhere around 20ms it is quite possible to get.

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