IDNet and latency

[fozy994]

Just checked pings at lunch time, still pinging well, little jumpy at times but that's a price to pay for turning interleaving off I guess.

D/L speeds around 2.2mb/s


Will update at 6pm tonight, that will be the real test!


Kelevra- is still having the same problem though :S Is it possible to check my lines alterations/work in the past 24hours? I don't know what could have coursed it but would be nice to know for future reference and customers.

[Rik]

Ask support, they may know of something, but it's more likely to be an exchange upgrade I suspect.

[Technical Ben]

I'll just mention that pinging the ISP is just an indication. Were not religious about it. But if a gamer says "my pings are dreadful, I pinged my isp and got 200ms!" They mean, "my average ping is 200ms, (hopefully I've checked else where as well) and I checked what the ping is to the ISP". As if both game and ISP have the same ping, it's a problem somewhere in your connection/pc or line. If only the game has high latency, it's the game. If it's just the isp/websites, then the problem is else where. Were not saying they are the same, just adding them to the known statistics to help problem solve. 

[kelevra]

Knowing a little about machines helps when doing this stuff so i have checked everything

Checked latency in 3 different games - All higher than a non interleaved line
Checked latency to many different sites - All higher than a non interleaved line

If the issue was with the line how could i resolve that? Is this something that would have to be raised with BT? If it is the line then i guess my only real option is to move to a cable (Virgin) line?

[Glenn]

If there is a problem with the line from the test socket to the exchange, then BT will need to be involved, via support.

[esh]

How much "higher" are we talking here? Ping varies with time of day and time of year quite notably. Sometimes BT just gets congested and a reset clears things up. Again, if you have any particular games/servers to test I can try later and see what I get.

[kelevra]

Were talking around 30-40ms higher than before.

When playing games online competitively this makes a massive difference.

[Rik]

What are your actual figures?

[kelevra]

Latencies to everything have gone from 20-25ms to 50-70ms spiking often toward the 200ms mark.

[Rik]

I'm betting on exchange congestion coupled, perhaps, with interleaving being turned on. Does your router indicate if that's the case?

[kelevra]

No router still indicates fast path, but it also indicated fast path when i asked for interleaving to be turned off. This is what is making me believe the line is in fact still interleaved.

[Rik]

Have you asked support?

[kelevra]

Yes and they have confirmed it has been turned off. However from when the line was migrated the latencies have not changed.

[Rik]

I wonder if it's flipped straight back on. I'll see what I can find out.

[Rik]

Interleaving is definitely off, it has to be exchange congestion. Currently, your ping is 46ms.

[Technical Ben]

Could it be your virtual path? It seems the problem does not lie with your pc or IDNet. You line seems fine if your not getting any errors or noise. 

[esh]

Spikes to 200 sound wrong if the server is in the UK. Do you have any ideas if it is, and if so, perhaps a tracroute?

[psp83]

I had a ping problem a month or so ago.. Speed was fine but pings we're high through the day and got better towards the evening, It was a congested exchange that caused this.

Everything is ok now thou.


Tracing route to www.bbc.net.uk [212.58.246.161]
over a maximum of 30 hops:

  1    <1 ms    <1 ms    <1 ms  www.routerlogin.com [192.168.0.1]
  2    22 ms    13 ms    13 ms  telehouse-gw4-lo2.idnet.net [212.69.63.99]
  3    14 ms    13 ms    13 ms  telehouse-gw3-g0-1-400.idnet.net [212.69.63.243]
  4    14 ms    14 ms    13 ms  rt-lonap-a.thdo.bbc.co.uk [193.203.5.90]
  5    14 ms    13 ms    14 ms  212.58.238.129
  6    15 ms    14 ms    14 ms  te12-1.hsw0.cwwtf.bbc.co.uk [212.58.239.222]
  7    21 ms    14 ms    14 ms  212.58.255.12
  8    14 ms    14 ms    14 ms  fmt-vip04.cwwtf.bbc.co.uk [212.58.246.161]

Trace complete.

Congested exchanges can do weird things to your line!

[kelevra]

Servers are in the UK,France,Germany etc

I would expect a increase of around 10-15 ms to a server beyond France. To be honest guys it plain and simply looks like the line is still interleaved in some shape or form. Whats it called when you can decrease latency but not actually turn interleaving off? I had sky do it at an old address.

[Steve]

Not sure of another way of decreasing latency apart from having traffic priority at the exchange.

[coreservers]

Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.


  1    <1 ms    <1 ms    <1 ms  www.routerlogin.com [192.168.0.1]
  2    39 ms    37 ms    36 ms  telehouse-gw4-lo2.idnet.net [212.69.63.99]
  3    36 ms    36 ms    37 ms  telehouse-gw3-g0-1-400.idnet.net [212.69.63.243]

  4    37 ms    38 ms    37 ms  redbus-gw2-g0-1-331.idnet.net [212.69.63.5]
  5    38 ms    37 ms    38 ms  redbus-gw1-fa2-0-300.idnet.net [212.69.63.225]
  6    37 ms    36 ms    37 ms  www.idnet.net [212.69.36.10]

Trace complete.

C:\Documents and Settings\Sonas>

Mines always above 35ms, but then I have to have interleaving on, or it's disastrous

[Rik]

Which package are you on?

[Technical Ben]

Could it be down to the additional routes? I have no idea how interleaving works. But could other lines along the connection have it turned on? Or does it stay off along the entire pipe? I could see latencies slowly increasing across the board as BTs equipment slowly degrades, and just pumps up the error bar to cope.

[Rik]

Interleaving, I think, only applies between the exchange and the router, Ben. After that, if I'm right, it's all in a series of melting pots along with other customers traffic. I don't think it would be practical to apply interleaving end to end, and I can't ask today.

[Technical Ben]

That's what I meant. Were probably going to see lower latencies, due to slower connections after the exchange. Between the customer and the exchange is only one part of the picture. I know some ISPs use different paths or whatever. But not sure what IDNet can realistically do to speed things up. Until better technologies become available. I do remember some of the new types of connection actually track the virtual paths, and routes taken. So they can swap them for faster ones (IE do you go via london, or around it? etc).