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195 posts

Master Geek


# 107945 22-Aug-2012 21:46
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Can others do some ping test to this server and post there results.  Any internet connection but this is form my VDSL connection. This follows on from the DLM profile discussions as I have tested on a DLM-1 profile and got 167ms so there is quite a bit of difference I am on DLM-2 with the 8ms latency.




 Ping Test

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200 posts

Master Geek


  # 675680 22-Aug-2012 21:48
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You do realise it takes something like a minimum of 130ms to go from the NZ edge to USA to due the physical distance / lightspeed ?

130ms from memory it's around this mark though. 

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Uber Geek

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  # 675682 22-Aug-2012 21:50
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Well, the difference in latency to anywhere on DLM-1 vs DLM-2 shouldn't be much more than 7ms... other fluctuations will be due to other factors.

 
 
 
 


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Master Geek
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  # 675685 22-Aug-2012 21:57
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adsl2+ tweaked snrm




195 posts

Master Geek


  # 675694 22-Aug-2012 22:04
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McGee: You do realise it takes something like a minimum of 130ms to go from the NZ edge to USA to due the physical distance / lightspeed ?

130ms from memory it's around this mark though. 


Return yes but not a one way trip that way be way to slow.  I checked on the southern cross cable website its about 65ms one way.

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  # 675699 22-Aug-2012 22:06
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I'm on DLM3; Other west coast servers seem to give better\more consistent results too:







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  # 675709 22-Aug-2012 22:21
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fellaintga: Return yes but not a one way trip that way be way to slow.  I checked on the southern cross cable website its about 65ms one way.


Errr, yeah, but you realise a ping measurement is the time taken for the trip there AND back right?



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Master Geek


  # 675716 22-Aug-2012 22:25
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SamF:
fellaintga: Return yes but not a one way trip that way be way to slow.  I checked on the southern cross cable website its about 65ms one way.


Errr, yeah, but you realise a ping measurement is the time taken for the trip there AND back right?


Yes hence why I said 130ms would be about theoretical minimum ping time.  But I believe McGee was saying it was 130ms minimum one way that is why I was just clarifying the minimum round trip is about 130ms going by the Southern Cross website.

 
 
 
 


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  # 675718 22-Aug-2012 22:25
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fellaintga:
McGee: You do realise it takes something like a minimum of 130ms to go from the NZ edge to USA to due the physical distance / lightspeed ?

130ms from memory it's around this mark though. 


Return yes but not a one way trip that way be way to slow.  I checked on the southern cross cable website its about 65ms one way.


Your link in the original post shows a Round Trip Latency.

65ms is presuming you're sitting at the SXC landing sites basically. You also need to include the contributions of the ADSL, switching delays for all the elements in the national path, distance associated with getting from your place to the start of the SXC, any interleaving, network contributions at the other end etc.

There's nothing dramatically wrong with the metrics in your first post. If you expected VDSL to speed up international latency then I'm afraid you're going to be disappointed.

Cheers - N






--

 

Please note all comments are the product of my own brain and don't necessarily represent the position or opinions of my employer, previous employers, colleagues, friends or pets.


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  # 675719 22-Aug-2012 22:26
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Right, sorry, gotcha :)

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  # 675722 22-Aug-2012 22:35
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SamF: Well, the difference in latency to anywhere on DLM-1 vs DLM-2 shouldn't be much more than 7ms... other fluctuations will be due to other factors.


Hmm, 7ms or 14ms?  7ms makes sense but I ask because I saw a drop of ~15ms in local pings when I dropped from DLM2 to DLM3 (my ping on local speedtests went from 20ms to 35ms - very consistently)

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  # 675723 22-Aug-2012 22:36
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Ah yes, you are right. The latency is both ways (I should have read my own post above before I posted that!! :D)

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Uber Geek

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  # 675724 22-Aug-2012 22:37
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From SNAP @ home VDSL.


And from work (use as a reference)

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  # 675742 22-Aug-2012 23:46
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I'm guessing you guys are all in the SI, would be interesting to get some AKL snap users to post a comparison as that should take ~20ms off.

ADSL connection at home from another AKL ISP






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  # 675823 23-Aug-2012 09:48
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@insane: I'm Auckland :) Do you have interleaving off on your line?

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Ultimate Geek


  # 675861 23-Aug-2012 11:37
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Pretty similar results here to insane

SS AYCE ADSL2+ with interleaving off








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