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  Need: someone with VERY FAST net to do ping  (Read 2503 times)
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Offline blahblahblahh

JGO Coder


Medals: 1


http://t-machine.org


« Posted 2004-12-14 08:29:22 »

I'm trying to illustrate a point about latency, the current state of the art, and the minimum theoretical latency possible (i.e. speed of data transfer in electrical wiring).

I have some good data for ping times from London to New York (from when I had access to super-JANET), but I'm aware there are significant differences between cross-atlantic times (one very long straight cable) and cross-continent times (potnetially lots of networks to cross, jumping up and down on backbones, etc).

Is there anyone with access to *fast* national bandwidth on a continental level? e.g. anyone at a major university?

Especially interested in west-coast US to east-coast US ping times, and anything that stretches from one side of continental Asia to the other, ditto (to a lesser extent) Europe.

The distances need to be large to demonstrate the point, so you really need to be on the edge of your continent, not the middle I'm afraid.

I remember there are some sites that do ping times between internet exchanges, but these don't tend to be very far apart, and I would prefer to get some data that are within grasp of the consumer, since this is a book on networking in *games*...

malloc will be first against the wall when the revolution comes...
Offline Spasi
« Reply #1 - Posted 2004-12-14 09:43:52 »

I have remote access to a Win2K3 machine in Athens, on the backbone of one of the two largest greek ISPs. I'm not a networking guy, but given clear instructions (or preferably a nice batch file) I can run a couple of tests.
Offline blahblahblahh

JGO Coder


Medals: 1


http://t-machine.org


« Reply #2 - Posted 2004-12-14 10:51:30 »

Pick a city as far away as you can think of whilst still on the same continent (I guess you could try Moscow?).

Work out something in that city that's going to have a fast connection. Universities are usually good, or else large international organizations.

Best of all is ISP's based there, if they're big.

Then you need to:
1. find out the distance in kilometres (to within 10% of accuracy is fine. Most distances between any pair of cities are availalbe on the web). I can try this myself if you can't be bothered Smiley
2. run "traceroute name.of.site".

That could be "tcptraceroute" or it could be "tracert" depending upon your OS.

the site name is, e.g. www.google.com

e.g.:

traceroute www.google.com
(prints out lots of info)

3, When it's finished, copy/paste it here.

From the trace, I'll be able both to verify what I'm looking at and to see roughly whether it's a realistic route to take.

PS: traceroute is a loverly tool for network coding. It tells you where every packet goes on it's way to wherever you're trying to get to - it's a list of machines that forwarded your packets. Useful for discovering which part of the net is slowing down your packets, whether your ISP is being cheap and paying too little for their international peering, etc.

malloc will be first against the wall when the revolution comes...
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Offline Spasi
« Reply #3 - Posted 2004-12-14 12:04:24 »

University of Moscow
Athens - Moscow : 2233 km (1388 miles)
--------------------------------------

Tracing route to www.msu.ru [193.232.113.129]
over a maximum of 30 hops:

 1    <1 ms    <1 ms    <1 ms  hsrp71-csw01.core.internet.gr [62.1.0.193]
 2    <1 ms    <1 ms    <1 ms  fasteth10-noc01.core.internet.gr [62.1.0.1]
 3     4 ms     4 ms     2 ms  193.92.29.65
 4     3 ms     3 ms     2 ms  titan-fa4102.forthnet.gr [194.219.227.129]
 5     3 ms     3 ms     4 ms  core-ath-02.forthnet.gr [194.219.227.99]
 6     3 ms     4 ms     2 ms  core-ath-03.forthnet.gr [194.219.227.103]
 7    71 ms    72 ms    71 ms  lon7-forthnet-2-gr.lon.seabone.net [195.22.209.37]
 8    79 ms    77 ms    76 ms  linx-lon1-racc1.lon.seabone.net [195.22.209.109]
 9    72 ms     *       71 ms  GigabitEthernet5-0.linx1.lon1.level3.net [195.66.224.77]
10    79 ms    71 ms    71 ms  so-1-3-0.gar2.London1.Level3.net [212.113.3.29]
11    71 ms    72 ms    70 ms  ge-0-3-0-0.bbr2.London1.Level3.net [4.68.128.125]
12   131 ms   115 ms   110 ms  so-0-1-0.mp2.Stockholm1.Level3.net [4.68.128.70]
13   108 ms   112 ms   107 ms  so-10-0.hsa2.Stockholm1.Level3.net [213.242.68.202]
14   109 ms   111 ms   105 ms  213.242.69.22
15   107 ms   111 ms   109 ms  SE-gw.RUN.net [193.10.252.150]
16   131 ms   130 ms   130 ms  msk-gw.RUN.Net [193.232.80.209]
17   131 ms   131 ms   129 ms  MSUnet.msk.RUN.Net [193.232.80.90]
18   131 ms   133 ms   131 ms  virtual.msu.ru [193.232.113.129]

Trace complete.
Offline Spasi
« Reply #4 - Posted 2004-12-14 12:04:56 »

ISP in Portugal
Athens - Lisbon : 2848 km (1770 miles)
--------------------------------------

Tracing route to www.oninet.pt [195.245.176.109]
over a maximum of 30 hops:

 1    <1 ms    <1 ms    14 ms  hsrp71-csw01.core.internet.gr [62.1.0.193]
 2    <1 ms    <1 ms    <1 ms  fasteth10-noc01.core.internet.gr [62.1.0.1]
 3     2 ms     1 ms     2 ms  193.92.29.65
 4     5 ms     3 ms     2 ms  titan-fa4102.forthnet.gr [194.219.227.129]
 5     4 ms     4 ms     3 ms  core-ath-02.forthnet.gr [194.219.227.99]
 6    73 ms    80 ms    75 ms  Pos3-0.GW1.LND8.ALTER.NET [146.188.66.29]
 7    92 ms    78 ms    70 ms  ge6-0.cr2.lnd8.gbb.uk.uu.net [158.43.188.2]
 8    71 ms    70 ms    71 ms  pos4-0.cr2.lnd10.gbb.uk.uu.net [158.43.253.150]
 9    74 ms    71 ms    70 ms  sc-7-0-0.xr2.lnd9.alter.net [158.43.150.102]
10    70 ms    72 ms    77 ms  so-1-1-0.TR1.LND9.ALTER.NET [146.188.15.37]
11   112 ms   112 ms   112 ms  so-0-1-0.XR1.LIS1.ALTER.NET [146.188.2.226]
12   117 ms   112 ms   114 ms  313.ATM0-0-0.GW1.LIS1.ALTER.NET [146.188.10.106]
13   115 ms   115 ms   115 ms  onitelecom.customer.ALTER.NET [146.188.53.254]
14   113 ms   115 ms   116 ms  SP01-02 [195.245.137.58]
15   115 ms   113 ms   113 ms  fn1.net4b.pt [195.245.191.100]
16   119 ms   116 ms   119 ms  www.oninetspeed.pt [195.245.176.109]

Trace complete.
Offline Spasi
« Reply #5 - Posted 2004-12-14 12:05:22 »

ISP in Ireland
Athens - Dublin : 2852 km (1772 miles)
--------------------------------------

Tracing route to home.eircom.net [159.134.198.138]
over a maximum of 30 hops:

 1    <1 ms    <1 ms    <1 ms  hsrp71-csw01.core.internet.gr [62.1.0.193]
 2    <1 ms    <1 ms    <1 ms  fasteth10-noc01.core.internet.gr [62.1.0.1]
 3     2 ms     1 ms     1 ms  193.92.29.65
 4     3 ms     2 ms     3 ms  titan-fa4102.forthnet.gr [194.219.227.129]
 5     4 ms     3 ms     3 ms  core-ath-02.forthnet.gr [194.219.227.99]
 6    72 ms    81 ms    70 ms  Pos3-0.GW1.LND8.ALTER.NET [146.188.66.29]
 7    70 ms    78 ms    71 ms  ge6-0.cr1.lnd8.gbb.uk.uu.net [158.43.188.194]
 8    72 ms    71 ms    74 ms  pos1-0.cr1.lnd10.gbb.uk.uu.net [158.43.253.137]
 9    74 ms    72 ms    72 ms  sc-7-0-0.xr1.lnd9.alter.net [158.43.150.98]
10    73 ms    73 ms    76 ms  so-0-1-0.TR1.LND9.ALTER.NET [146.188.15.33]
11    73 ms    76 ms    75 ms  POS1-0.BR1.LND9.ALTER.NET [146.188.7.242]
12    73 ms    79 ms    78 ms  146.188.35.138
13    75 ms    72 ms    73 ms  sl-gw22-lon-1-1.sprintlink.net [213.206.128.103]
14    73 ms    76 ms    74 ms  sle-einet-2-0.sprintlink.net [213.206.156.210]
15    88 ms    92 ms    87 ms  159.134.125.46
16    93 ms    89 ms    87 ms  159.134.198.138

Trace complete.
Offline Tzan

Junior Devvie





« Reply #6 - Posted 2004-12-14 14:46:10 »

I live in the Boston area, but my home comcast cable connection may not be what you want. Let me know, also give me a good destination. I tried microsoft but am getting many Request Timed Out. It might not be a good day for this.
Offline blahblahblahh

JGO Coder


Medals: 1


http://t-machine.org


« Reply #7 - Posted 2004-12-14 15:39:41 »

Thanks, spasi. Unfortunately, your international connectivity is not good: everything of yours is going via the UK, at which point it starts to get difficult to estimate the actual distance being covered.

I guess that's a fair point, though: people who don't live in the UK or USA will always get artificially inflated ping times.

malloc will be first against the wall when the revolution comes...
Offline blahblahblahh

JGO Coder


Medals: 1


http://t-machine.org


« Reply #8 - Posted 2004-12-14 15:42:29 »

Quote
I tried microsoft but am getting many Request Timed Out. It might not be a good day for this.


MS always shows up with crap connectivity. Either they deliberately fake their site is slower than it is (to throw off the script kiddies: they think they have enough to DDos, and then fail miserably) or just because they don't spend enough on their websites.

I seriously doubt the latter Wink.

UK and US Universities are nearly always good targets - most have  private high-speed backbones, so they're easy to get at.

malloc will be first against the wall when the revolution comes...
Offline Tzan

Junior Devvie





« Reply #9 - Posted 2004-12-14 17:22:35 »

Boston (10 mi. south of the city) to USC in LA
2600 miles
at 3:10pm eastern time, on comcast cable modem


C:\WINDOWS>tracert www.usc.edu

Tracing route to www.usc.edu [128.125.253.146]
over a maximum of 30 hops:

 1    10 ms     9 ms     9 ms  10.219.144.1
 2    24 ms    10 ms     9 ms  bar01-p0-1-0.wymohe1.ma.attbb.net [65.96.0.165]

 3     9 ms    11 ms     9 ms  65.96.1.122
 4    11 ms    14 ms    11 ms  24.62.0.222
 5    10 ms    22 ms    12 ms  bar02-p4-0.ndhmhe1.ma.attbb.net [24.91.0.158]
 6    11 ms    12 ms    22 ms  12.125.47.49
 7    12 ms    11 ms    13 ms  12.123.40.218
 8    17 ms    20 ms    19 ms  tbr2-cl1.n54ny.ip.att.net [12.122.10.22]
 9    18 ms    17 ms    29 ms  ggr2-p390.n54ny.ip.att.net [12.123.3.62]
10    19 ms    17 ms    19 ms  so-1-3-0.gar4.NewYork1.Level3.net [4.68.127.149]

11    18 ms    19 ms    19 ms  ae-1-55.bbr1.NewYork1.Level3.net [4.68.97.129]
12    86 ms    83 ms    84 ms  so-1-0-0.mpls1.Tustin1.Level3.net [209.247.8.118]
13    97 ms    84 ms    84 ms  4.68.114.2
14     *        *        *     Request timed out.
15   113 ms    97 ms   104 ms  usc-vlan2008.ln.net [130.152.181.115]
16    85 ms    86 ms    98 ms  www.usc.edu [128.125.253.146]

Trace complete.



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