[Make-wifi-fast] Bufferbloat on Norwegian train wifi

Simon Barber simon at superduper.net
Mon Jun 22 16:29:19 EDT 2020

My record was on a Gogo inflight inernet connection. Ping time of 12 minutes!!!! Perhaps I should have complained that I only got 48 minutes out of my 1 hour session?


> On Jun 22, 2020, at 5:51 AM, Toke Høiland-Jørgensen <toke at redhat.com> wrote:
>> I've always noticed that the wireless network on Norwegian Vy trains
>> around Oslo can be close to useless with page load time in excess of
>> 10 seconds and frequent timeouts. That's why I decided to bring along
>> the laptop to run an RRUL BE test, and the results are, as expected,
>> pretty terrible. Mind you, I ran this test while the train was in a
>> tunnel, but I don't think that should matter all that much since
>> there's good 4G service in the tunnel.
>> I've attached the flent data file. Average ping is around 800 ms at
>> the highest, while ICMP spikes above 1000 ms at the highest. I get
>> well below 1 Mbps of download bandwidth, and the upload bandwidth is
>> considerably higher but quite variable at 3 to 15 Mbps.
> Yeah, that seems pretty bad. Although my personal record for bloat on a
> train was around ~30 seconds ;)
> Guess you could try complaining to the operator, but it may be difficult
> to get hold of anyone with enough of a clue to actually do something
> about this. And since the service is likely to be oursourced, you'll
> need to get the train operator to apply pressure to the company
> providing the service to get them to care. Tried to get Icomera (the
> company providing the internet in Swedish and German trains, among
> others) to care about bufferbloat some years back; but was totally
> unsuccessful :/
> -Toke
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