# # Pinging times, 2009-02-05, inspired by an article in IEEE # web blogs about traders in London getting an advantage by # working from servers next-door to the LSE [Stock-exchange, # not the LSE...], giving sub-millisecond response rather # than e.g. ~12ms from Frankfurt (claimed 200km/ms, i.e. 2c/3, # in optic fibres). # # So, from `box' (desktop machine at home, working by NAT # behind `serv' in the cupboard, external address 89.253.70.139 # on the `ownit' broadband net) and from `gnu' (desktop machine # at work, address 130.237.53.17), several hosts have been # pinged, recording the time=xxx value [ms] returned by the # iputils ping command after 10 pings, accepting only very # consistent (few percent) values. Times given are supposedly # (from the manual) round-trip times. The claimed speed does # seem to be in the right order of magnitude. I'm surprised # that the fibres are so low refractive index as they'd need # to be for this, and that the electronics on the way don't # make a more significant difference. # # # host # location # ms[box] # ms[gnu] serv.ntmm.org (Vallentuna) 0.1 2 gnu.ets.kth.se (Stockholm) 2 0.05 www.kth.se (Stockholm) 2 0.19 www.lth.se (Lund) 11 10 www.ic.ac.uk (London) 34 33 www.ox.ac.uk (Oxford) 35 38 dint.ntmm.org (Bucks, UK [ADSL]) 50 48 www.tu-berlin.de (Berlin) 38 40 www.mit.edu (US east-coast) 110 114 www.berkeley.edu (US west-coast) 190 192 # More-raw results (another run of the ping loop), reformatted (3 pings each). ttl=59 time=2.25ms 89.253.70.139 89-253-70-139.customers.ownit.se ttl=59 time=2.14ms 89.253.70.139 89-253-70-139.customers.ownit.se ttl=59 time=2.19ms 89.253.70.139 89-253-70-139.customers.ownit.se ttl=64 time=0.048ms 130.237.53.17 gnu.ets.kth.se ttl=64 time=0.081ms 130.237.53.17 gnu.ets.kth.se ttl=64 time=0.049ms 130.237.53.17 gnu.ets.kth.se ttl=63 time=0.824ms 130.237.32.143 lvs-vip-6.sys.kth.se ttl=63 time=0.201ms 130.237.32.143 lvs-vip-6.sys.kth.se ttl=63 time=0.197ms 130.237.32.143 lvs-vip-6.sys.kth.se ttl=57 time=10.2ms 130.235.79.220 nova.kansli.lth.se ttl=57 time=10.3ms 130.235.79.220 nova.kansli.lth.se ttl=57 time=10.2ms 130.235.79.220 nova.kansli.lth.se ttl=111 time=36.6ms 155.198.140.14 ic-www.ic.ac.uk ttl=111 time=36.6ms 155.198.140.14 ic-www.ic.ac.uk ttl=111 time=36.7ms 155.198.140.14 ic-www.ic.ac.uk ttl=50 time=37.8ms 163.1.13.189 torchbox.oucs.ox.ac.uk ttl=50 time=37.9ms 163.1.13.189 torchbox.oucs.ox.ac.uk ttl=50 time=34.2ms 163.1.13.189 torchbox.oucs.ox.ac.uk ttl=48 time=57.7ms 213.78.204.207 [dint] ttl=48 time=56.3ms 213.78.204.207 [dint] ttl=48 time=61.0ms 213.78.204.207 [dint] ttl=53 time=40.0ms 130.149.4.135 www.zrz.TU-Berlin.DE ttl=53 time=40.0ms 130.149.4.135 www.zrz.TU-Berlin.DE ttl=53 time=40.0ms 130.149.4.135 www.zrz.TU-Berlin.DE ttl=244 time=114ms 18.7.22.83 WWW.MIT.EDU ttl=244 time=114ms 18.7.22.83 WWW.MIT.EDU ttl=244 time=114ms 18.7.22.83 WWW.MIT.EDU ttl=46 time=192ms 169.229.131.81 webfarm.Berkeley.EDU ttl=46 time=196ms 169.229.131.81 webfarm.Berkeley.EDU ttl=46 time=192ms 169.229.131.81 webfarm.Berkeley.EDU # Some traceroutes from gnu.ets.kth.se (130.237.53.17): serv.ntmm.org traceroute to 89-253-70-139.customers.ownit.se (89.253.70.139), 30 hops max, 46 byte packets 1 130.237.53.252 (130.237.53.252) 0.287 ms 0.231 ms 0.210 ms 2 cn6-ea5-p2p.gw.kth.se (130.237.211.229) 0.272 ms 0.243 ms 0.216 ms 3 a1g-cn6-p2p.gw.kth.se (130.237.0.1) 0.394 ms 0.376 ms 0.364 ms 4 c2sth-ae0-1001.sunet.se (193.11.0.197) 0.412 ms 0.416 ms 0.402 ms 5 netnod-ix-ge-b-sth-1500.ownit.se (194.68.128.154) 0.548 ms 0.916 ms 0.564 ms 6 10ge-2-2-cr1.a1.sth.ownit.se (84.246.88.149) 0.508 ms 0.579 ms 0.504 ms 7 10ge-1-1-dr1.a1.sth.ownit.se (89.253.100.154) 0.600 ms 0.667 ms 0.570 ms 8 * * * ^C www.kth.se traceroute to lvs-vip-6.sys.kth.se (130.237.32.143), 30 hops max, 46 byte packets 1 130.237.53.252 (130.237.53.252) 0.812 ms 0.212 ms 0.207 ms 2 cn6-ea5-p2p.gw.kth.se (130.237.211.229) 0.246 ms 0.215 ms 0.226 ms 3 *^C www.lth.se traceroute to nova.kansli.lth.se (130.235.79.220), 30 hops max, 46 byte packets 1 130.237.53.252 (130.237.53.252) 0.272 ms 0.214 ms 0.208 ms 2 cn6-ea5-p2p.gw.kth.se (130.237.211.229) 0.266 ms 0.223 ms 0.227 ms 3 a1g-cn6-p2p.gw.kth.se (130.237.0.1) 0.394 ms 0.376 ms 0.359 ms 4 c2sth-ae0-1001.sunet.se (193.11.0.197) 0.427 ms 0.420 ms 0.404 ms 5 a1sth-ae5.sunet.se (130.242.82.210) 0.440 ms 0.450 ms 0.482 ms 6 lu-g.sunet.se (193.11.20.10) 18.274 ms 10.763 ms 19.990 ms 7 c001--x001.net.lu.se (130.235.217.9) 13.630 ms 17.768 ms 19.977 ms 8 d001b--c002.net.lu.se (130.235.217.50) 17.129 ms 18.830 ms 10.761 ms 9 * *^C www.ic.ac.uk traceroute to ic-www.ic.ac.uk (155.198.140.14), 30 hops max, 46 byte packets 1 130.237.53.252 (130.237.53.252) 0.274 ms 0.210 ms 0.220 ms 2 cn6-ea5-p2p.gw.kth.se (130.237.211.229) 0.266 ms 0.245 ms 0.216 ms 3 a1g-cn6-p2p.gw.kth.se (130.237.0.1) 0.384 ms 0.373 ms 0.376 ms 4 c2sth-ae0-1001.sunet.se (193.11.0.197) 14.343 ms 0.479 ms 9.940 ms 5 se-tug.nordu.net (193.10.68.37) 0.866 ms 0.864 ms 0.861 ms 6 se-fre.nordu.net (193.10.252.85) 0.881 ms dk-uni.nordu.net (193.10.68.18) 17.200 ms 17.193 ms 7 dk-ore.nordu.net (193.10.68.118) 10.541 ms dk-ore.nordu.net (193.10.68.25) 14.079 ms dk-ore.nordu.net (193.10.68.118) 10.531 ms 8 nordunet.rt2.cop.dk.geant2.net (62.40.124.45) 14.141 ms 10.602 ms 14.122 ms 9 so-4-0-0.rt1.ams.nl.geant2.net (62.40.112.78) 23.487 ms 23.467 ms 26.993 ms 10 so-4-0-0.rt1.lon.uk.geant2.net (62.40.112.138) 31.589 ms 35.141 ms 35.130 ms 11 po2-0-0.gn2-gw1.ja.net (62.40.124.198) 31.675 ms 35.187 ms 31.654 ms 12 so-5-0-0.lond-sbr1.ja.net (146.97.33.157) 31.954 ms 35.490 ms 31.938 ms 13 LMN-LMN1.site.ja.net (146.97.42.62) 35.755 ms 35.719 ms 32.150 ms 14 orpington.lmn.net.uk (194.83.102.130) 36.024 ms 32.431 ms 32.410 ms 15 hh-core-vl3810.net.ic.ac.uk (194.82.153.21) 36.055 ms 32.595 ms 36.048 ms 16 * *^C www.ox.ac.uk traceroute to torchbox.oucs.ox.ac.uk (163.1.13.189), 30 hops max, 46 byte packets 1 130.237.53.252 (130.237.53.252) 0.310 ms 0.219 ms 0.243 ms 2 cn6-ea5-p2p.gw.kth.se (130.237.211.229) 0.263 ms 0.223 ms 0.218 ms 3 a1g-cn6-p2p.gw.kth.se (130.237.0.1) 0.374 ms 0.391 ms 0.369 ms 4 c2sth-ae0-1001.sunet.se (193.11.0.197) 0.424 ms 0.433 ms 0.405 ms 5 se-tug.nordu.net (193.10.68.37) 1.240 ms 0.882 ms 0.862 ms 6 dk-uni.nordu.net (193.10.68.18) 17.187 ms se-fre.nordu.net (193.10.252.85) 0.910 ms 0.892 ms 7 dk-ore.nordu.net (193.10.68.25) 14.066 ms dk-ore.nordu.net (193.10.68.118) 10.551 ms dk-ore.nordu.net (193.10.68.25) 14.076 ms 8 nordunet.rt2.cop.dk.geant2.net (62.40.124.45) 10.598 ms 14.126 ms 10.580 ms 9 so-4-0-0.rt1.ams.nl.geant2.net (62.40.112.78) 27.024 ms 27.007 ms 23.504 ms 10 so-4-0-0.rt1.lon.uk.geant2.net (62.40.112.138) 35.137 ms 31.615 ms 31.621 ms 11 po2-0-0.gn2-gw1.ja.net (62.40.124.198) 35.192 ms 31.673 ms 35.213 ms 12 so-5-0-0.lond-sbr1.ja.net (146.97.33.157) 35.466 ms 31.975 ms 35.477 ms 13 TVN-TVN1.site.ja.net (146.97.42.82) 33.476 ms 33.422 ms 36.830 ms 14 pos2-0.oxfo-rbr1.ja.net (193.63.108.78) 33.939 ms 37.415 ms 37.413 ms 15 oxford-university-1.ja.net (193.63.109.2) 34.042 ms 37.668 ms 34.027 ms 16 torchbox.oucs.ox.ac.uk (163.1.13.189) 34.441 ms 37.980 ms 34.413 ms 17 torchbox.oucs.ox.ac.uk (163.1.13.189) 38.029 ms !<10> 38.253 ms !<10> 34.374 ms !<10> dint.ntmm.org traceroute to 213.78.204.207 (213.78.204.207), 30 hops max, 46 byte packets 1 130.237.53.252 (130.237.53.252) 0.309 ms 0.223 ms 0.213 ms 2 cn6-ea5-p2p.gw.kth.se (130.237.211.229) 0.268 ms 0.250 ms 0.219 ms 3 a1g-cn6-p2p.gw.kth.se (130.237.0.1) 0.393 ms 0.386 ms 0.358 ms 4 c2sth-ae0-1001.sunet.se (193.11.0.197) 0.401 ms 0.407 ms 0.427 ms 5 se-tug.nordu.net (193.10.68.37) 0.967 ms 0.875 ms 0.866 ms 6 dk-uni.nordu.net (193.10.68.18) 17.242 ms se-fre.nordu.net (193.10.252.85) 0.916 ms 0.882 ms 7 dk-ore.nordu.net (193.10.68.25) 14.089 ms dk-ore.nordu.net (193.10.68.118) 10.528 ms dk-ore.nordu.net (193.10.68.25) 14.082 ms 8 dk-ore2.nordu.net (193.10.68.50) 10.575 ms 14.100 ms 10.522 ms 9 xe-10-3-0-347-scr010.thn.as13285.net (195.69.145.34) 33.127 ms 33.175 ms 29.581 ms 10 onetel-pp-thn.as13285.net (78.144.3.10) 32.848 ms 31.969 ms 29.498 ms 11 212.67.120.81 (212.67.120.81) 35.222 ms 29.425 ms 32.804 ms 12 212.67.121.131 (212.67.121.131) 33.127 ms 31.982 ms 33.071 ms 13 212.67.123.1 (212.67.123.1) 30.488 ms 30.148 ms 36.458 ms 14 * * * ^C www.tu-berlin.de traceroute: Warning: www.tu-berlin.de has multiple addresses; using 130.149.4.135 traceroute to www.zrz.TU-Berlin.DE (130.149.4.135), 30 hops max, 46 byte packets 1 130.237.53.252 (130.237.53.252) 0.454 ms 0.286 ms 4.794 ms 2 cn6-ea5-p2p.gw.kth.se (130.237.211.229) 0.271 ms 0.222 ms 0.216 ms 3 a1g-cn6-p2p.gw.kth.se (130.237.0.1) 0.370 ms 0.369 ms 0.373 ms 4 c2sth-ae0-1001.sunet.se (193.11.0.197) 0.409 ms 0.431 ms 0.401 ms 5 se-tug.nordu.net (193.10.68.37) 6.447 ms 0.891 ms 0.890 ms 6 se-fre.nordu.net (193.10.252.85) 0.885 ms dk-uni.nordu.net (193.10.68.18) 17.226 ms 17.188 ms 7 dk-ore.nordu.net (193.10.68.118) 10.539 ms dk-ore.nordu.net (193.10.68.25) 14.156 ms dk-ore.nordu.net (193.10.68.118) 10.547 ms 8 nordunet.rt2.cop.dk.geant2.net (62.40.124.45) 14.128 ms 10.579 ms 14.105 ms 9 so-7-3-0.rt1.fra.de.geant2.net (62.40.112.49) 24.629 ms 24.635 ms 28.147 ms 10 dfn-gw.rt1.fra.de.geant2.net (62.40.124.34) 25.139 ms 28.973 ms 28.448 ms 11 zr-pot1-te0-7-0-2.x-win.dfn.de (188.1.145.138) 39.183 ms 42.621 ms 39.067 ms 12 xr-tub1-te2-3.x-win.dfn.de (188.1.144.222) 40.205 ms 43.830 ms 40.163 ms 13 kr-tu-berlin.x-win.dfn.de (188.1.33.82) 43.768 ms 43.759 ms 40.199 ms 14 *^C www.mit.edu traceroute to WWW.MIT.EDU (18.7.22.83), 30 hops max, 46 byte packets 1 130.237.53.252 (130.237.53.252) 0.301 ms 0.225 ms 0.216 ms 2 cn6-ea5-p2p.gw.kth.se (130.237.211.229) 0.262 ms 0.226 ms 0.218 ms 3 a1g-cn6-p2p.gw.kth.se (130.237.0.1) 0.377 ms 0.367 ms 0.371 ms 4 c2sth-ae0-1001.sunet.se (193.11.0.197) 0.416 ms 0.428 ms 0.415 ms 5 se-tug.nordu.net (193.10.68.37) 0.875 ms 0.903 ms 0.864 ms 6 se-fre.nordu.net (193.10.252.85) 0.893 ms 0.892 ms 0.881 ms 7 netnod-ix-ge-b-sth-1500.cogent.com (194.68.128.155) 1.375 ms 1.378 ms 1.379 ms 8 te1-3.ccr01.ham01.atlas.cogentco.com (130.117.3.93) 16.380 ms te2-3.ccr02.ham01.atlas.cogentco.com (130.117.48.157) 16.717 ms te1-3.ccr02.ham01.atlas.cogentco.com (130.117.3.205) 16.380 ms 9 te3-1.ccr01.dus01.atlas.cogentco.com (130.117.3.69) 21.826 ms te2-2.ccr01.dus01.atlas.cogentco.com (130.117.3.210) 21.798 ms te2-4.ccr01.dus01.atlas.cogentco.com (130.117.48.141) 22.055 ms 10 te8-1.ccr01.ams03.atlas.cogentco.com (130.117.3.85) 25.795 ms te3-1.ccr02.ams03.atlas.cogentco.com (130.117.3.89) 26.045 ms te8-1.ccr01.ams03.atlas.cogentco.com (130.117.3.85) 25.802 ms 11 te7-3.mpd01.ymq02.atlas.cogentco.com (130.117.0.69) 107.815 ms te3-8.mpd01.ymq02.atlas.cogentco.com (154.54.0.70) 107.609 ms te8-8.mpd01.ymq02.atlas.cogentco.com (154.54.0.74) 107.846 ms 12 te9-2.ccr02.bos01.atlas.cogentco.com (66.28.4.197) 116.723 ms 116.583 ms te4-3.mpd01.bos01.atlas.cogentco.com (154.54.5.117) 116.608 ms 13 te4-3.ccr01.bos05.atlas.cogentco.com (154.54.25.250) 117.048 ms 116.926 ms 117.039 ms 14 *^C www.berkeley.edu traceroute to webfarm.Berkeley.EDU (169.229.131.81), 30 hops max, 46 byte packets 1 130.237.53.252 (130.237.53.252) 0.275 ms 0.223 ms 0.209 ms 2 cn6-ea5-p2p.gw.kth.se (130.237.211.229) 0.269 ms 0.234 ms 0.218 ms 3 a1g-cn6-p2p.gw.kth.se (130.237.0.1) 214.084 ms 193.876 ms 0.411 ms 4 c2sth-ae0-1001.sunet.se (193.11.0.197) 0.412 ms 0.450 ms 0.396 ms 5 se-tug.nordu.net (193.10.68.37) 8.906 ms 0.865 ms 0.867 ms 6 se-fre.nordu.net (193.10.252.85) 0.952 ms dk-uni.nordu.net (193.10.68.18) 17.235 ms 17.189 ms 7 dk-ore.nordu.net (193.10.68.118) 10.544 ms dk-ore.nordu.net (193.10.68.25) 14.047 ms dk-ore.nordu.net (193.10.68.118) 10.528 ms 8 nordunet.rt2.cop.dk.geant2.net (62.40.124.45) 14.112 ms 10.582 ms 14.107 ms 9 so-4-0-0.rt1.ams.nl.geant2.net (62.40.112.78) 23.574 ms 23.477 ms 27.012 ms 10 216.24.184.85 (216.24.184.85) 107.358 ms 111.250 ms 111.267 ms 11 wash-newy-98.layer3.nlr.net (216.24.186.23) 113.337 ms 116.384 ms 112.922 ms 12 atla-wash-64.layer3.nlr.net (216.24.186.20) 127.454 ms 131.367 ms 127.551 ms 13 hous-atla-70.layer3.nlr.net (216.24.186.8) 155.821 ms 155.604 ms 152.530 ms 14 losa-hous-87.layer3.nlr.net (216.24.186.30) 186.672 ms 183.015 ms 183.092 ms 15 hpr-lax-hpr--nlr-packenet.cenic.net (137.164.26.130) 228.055 ms 182.881 ms 186.378 ms 16 svl-hpr--lax-hpr-10ge.cenic.net (137.164.25.13) 195.079 ms 190.971 ms 194.400 ms 17 oak-hpr--svl-hpr-10ge.cenic.net (137.164.25.9) 192.319 ms 192.371 ms 195.918 ms 18 hpr-ucb-ge--oak-hpr.cenic.net (137.164.27.130) 192.226 ms 195.695 ms 192.759 ms 19 t2-3.inr-202-reccev.Berkeley.EDU (128.32.0.39) 195.843 ms 192.619 ms 195.865 ms 20 t1-1.inr-211-srb.Berkeley.EDU (128.32.255.43) 195.959 ms 192.645 ms 195.859 ms 21 * * ^C # and, from dint.ntmm.org, another traceroute: traceroute to webfarm.Berkeley.EDU (169.229.131.81), 30 hops max, 46 byte packets 1 sgrs-lns-01-lo0.onetel.net.uk (212.67.121.44) 36.457 ms 28.484 ms 29.001 ms 2 212.67.123.30 (212.67.123.30) 27.955 ms 28.967 ms 29.993 ms 3 212.67.120.74 (212.67.120.74) 28.952 ms 31.628 ms 30.962 ms 4 ge-0-0-2-scr010.thn.as13285.net (78.144.3.9) 113.979 ms 34.466 ms 29.961 ms 5 xe-11-3-0-scr001.log.as13285.net (78.144.1.1) 115.994 ms 28.529 ms 25.961 ms 6 Opal-ge-2.2.0.mpr1.lhr2.above.net (213.161.78.209) 27.984 ms 30.501 ms 28.961 ms 7 so-0-1-0.mpr1.dca2.us.above.net (64.125.27.57) 104.978 ms 99.480 ms 96.970 ms MPLS Label=115042 CoS=0 TTL=0 S=1 8 so-1-2-0.mpr1.lga5.us.above.net (64.125.26.102) 98.973 ms 101.494 ms 98.968 ms MPLS Label=237808 CoS=0 TTL=0 S=1 9 so-2-1-0.mpr1.sjc2.above.net (64.125.26.229) 183.003 ms 177.465 ms 176.952 ms MPLS Label=454695 CoS=0 TTL=0 S=1 10 xe-0-1-0.mpr1.pao1.us.above.net (64.125.31.65) 189.995 ms 174.486 ms 185.973 ms 11 paix-px1--abovenet.cenic.net (198.32.251.153) 173.967 ms 180.387 ms 183.966 ms 12 dc-oak-core1--paix-px1-ge.cenic.net (137.164.47.19) 184.976 ms 176.446 ms 177.980 ms 13 dc-oak-agg2--oak-core1-ge-1.cenic.net (137.164.46.62) 176.974 ms 181.465 ms 178.967 ms 14 ucb--oak-dc2-ge.cenic.net (137.164.23.30) 179.977 ms 189.475 ms 185.967 ms 15 t2-3.inr-202-reccev.Berkeley.EDU (128.32.0.39) 231.979 ms 194.475 ms 190.966 ms 16 t1-1.inr-211-srb.Berkeley.EDU (128.32.255.43) 188.973 ms 190.474 ms 190.966 ms 17 * * *