[Starlink] latency under load in NZ

[Ulrich Speidel]

It always bugs me to read the word "speed" in documents like these when 
they mean "data rate". The speed for all cable-bound technologies 
involved is about the same give or take a few percent and it's measured 
in metres/second.

That taken into account, the figures given in the report are believable 
and reflect my experience here in NZ. What the report doesn't mention is 
pricing - HFC starts from NZ$53 (US$34) a month with my provider 
(Vodafone), Fibre Max from NZ$89 (US$57) - what you can get depends on 
where you are.

BTW (Dave already knows) - we've gotten ourselves a Starlink unit as a 
technology reference platform at the School, and I took it on its first 
outing last week. We have a roaming subscription (NZ$199 / US$126) so 
don't expect top data rates. We went to a park in Auckland as campus is 
too built up and too H&S encumbered for operation on a roof.  This is 
what we saw on 3 interleaved tests using speedtest.net in the early 
afternoon (all figures in Mb/s).

*Server*

	

*Test 1*

	

**

	

**

	

*Test 2*

	

**

	

**

	

*Test 3 *

	

**

	

**

	

*Average*

	

**

	

**

**

	

/up/

	

/down/

	

/ping/

	

/up/

	

/down/

	

/ping/

	

/up/

	

/down/

	

/ping/

	

/up/

	

/down/

	

/ping/

*Spark*

	

15.13

	

76.01

	

38

	

4.18

	

74.09

	

4.18

	

11.52

	

75.39

	

92

	

10.28

	

75.16

	

44.73

*Vocusgroup*

	

9.74

	

64.85

	

54

	

1.4

	

76.56

	

31

	

12.27

	

54.42

	

36

	

7.80

	

65.28

	

40.33

*MyRepublic*

	

6.74

	

176.1

	

33

	

10.99

	

129.3

	

63

	

11.98

	

110.6

	

40

	

9.90

	

138.68

	

45.33

*Kordia*

	

3.01

	

124.1

	

43

	

14.29

	

150.3

	

32

	

2.39

	

85

	

63

	

6.56

	

119.82

	

46.00

**

	

	

	

	

	

	

	

	

	

	

	

	

*Average:*

	

8.66

	

110.27

	

42.00

	

7.72

	

107.58

	

32.55

	

9.54

	

81.36

	

57.75

	

8.64

	

99.74

	

44.10

Caveat: The park was still Central Auckland, so in an environment where 
there would have been very few subscribers for many miles around. 
Physical latency to / from satellite should have been well under 10 ms, 
so if Dave's rabbiting on about too much latency and bufferbloat in 
Starlink, he has a serious point here. Even accounting for use of South 
Island gateways, fibre backhaul to Auckland and BDP-sized buffers along 
the way, these numbers are not a good look at all!

On 8/12/2022 11:11 am, Dave Taht via Starlink wrote:
> https://comcom.govt.nz/__data/assets/pdf_file/0028/295804/MBNZ-Spring-Report-2022-27-October-2022.pdf 
> <https://comcom.govt.nz/__data/assets/pdf_file/0028/295804/MBNZ-Spring-Report-2022-27-October-2022.pdf>
>
> -- 
> This song goes out to all the folk that thought Stadia would work:
> https://www.linkedin.com/posts/dtaht_the-mushroom-song-activity-6981366665607352320-FXtz 
> <https://www.linkedin.com/posts/dtaht_the-mushroom-song-activity-6981366665607352320-FXtz>
> Dave Täht CEO, TekLibre, LLC
> _______________________________________________
> Starlink mailing list
> Starlink at lists.bufferbloat.net
> https://lists.bufferbloat.net/listinfo/starlink 
> <https://lists.bufferbloat.net/listinfo/starlink>

-- 
****************************************************************
Dr. Ulrich Speidel

School of Computer Science

Room 303S.594 (City Campus)

The University of Auckland
u.speidel at auckland.ac.nz  
http://www.cs.auckland.ac.nz/~ulrich/
****************************************************************


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