Xtra -> ftp.nz.debian.org VERY slow

Forums › Spark New Zealand › Xtra -> ftp.nz.debian.org VERY slow

barf

643 posts

Ultimate Geek

# 16097 24-Sep-2007 17:41

how can it be that a locally located debian mirror is slower than basically ANY foreign debian mirror?
I can achieve at best 40kb/s but normally get 5 - 15kb/s from this mirror hosted by citylink AFAIK.

the ihug debain mirror is super fast, but packages there are sometimes (ie constantly) out of date.

I apologise if this has already been covered or is common knowledge but just hoping someone could quickly explain why citylink is so slow from Xtra.

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freitasm

BDFL - Memuneh
64775 posts

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# 87952 24-Sep-2007 18:22

Because Xtra and TelstraClear are not peered with Citylink?

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barf

643 posts

Ultimate Geek

# 87964 24-Sep-2007 19:19

yes i thought that, but TelstraClear customers can get up to line-speed to the mirror while Xtra customers are getting poor speed.

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freitasm

BDFL - Memuneh
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# 87965 24-Sep-2007 19:20

Interesting, because when I downloaded Ubuntu it was faster to get it from Australia than from Citylink - and I am on TCL...

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Fraktul

836 posts

Ultimate Geek

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# 87966 24-Sep-2007 19:25

Have you looked at the differences between the routes from Xtra and TCL respectively?

barf

643 posts

Ultimate Geek

# 87969 24-Sep-2007 19:50

the route from a TelstraClear ADSL connection in chch looks like this

traceroute to 202.7.6.9 (202.7.6.9), 30 hops max, 52 byte packets
1 clear-chc1-bsn1.christchurch.clear.net.nz (203.97.26.224) 16.763 ms 12.376 ms 10.000 ms
2 203.97.9.4 (203.97.9.4) 12.043 ms 14.031 ms 11.279 ms
3 ge-1-0-947.u32.telstraclear.net (218.101.61.74) 16.402 ms 14.116 ms 13.090 ms
4 ge-1-3-0-957.ie1.telstraclear.net (218.101.61.69) 26.795 ms 24.865 ms 25.359 ms
5 ge-0-2-0-1.xcore1.acld.telstraclear.net (203.98.50.251) 26.128 ms 24.564 ms 26.094 ms
6 ge-0-1-0-914.icore1.acld.telstraclear.net (203.98.42.19) 24.900 ms 25.350 ms 30.035 ms
7 at-0-0-1-300.jb1.wils.telstraclear.net (203.98.42.37) 163.309 ms 161.328 ms 163.809 ms
8 GigabitEthernet5-1.GW4.LAX1.ALTER.NET (157.130.245.21) 157.270 ms 160.994 ms 161.096 ms
9 0.so-2-0-0.XL2.LAX1.ALTER.NET (152.63.53.62) 160.389 ms * 189.342 ms
10 150.ATM4-0.XR1.SJC2.ALTER.NET (152.63.48.2) 219.072 ms * 212.278 ms
11 POS7-0-0.GW4.SJC7.ALTER.NET (152.63.48.245) 179.321 ms 180.684 ms 179.594 ms
12 wbsconnect-gw.customer.alter.net (63.65.131.166) 172.986 ms 169.587 ms 169.510 ms
13 vlan901.br01-200p-sfo.unitedlayer.com (207.7.138.74) 176.417 ms 176.327 ms 191.926 ms
14 207.7.129.14 (207.7.129.14) 171.553 ms 172.617 ms 171.962 ms
15 ftp.citylink.co.nz (202.7.6.9) 174.671 ms 179.845 ms 177.345 ms

and from my ADSL at home:

traceroute to 202.7.6.9 (202.7.6.9), 30 hops max, 40 byte packets
1 192.168.1.2 (192.168.1.2) 1.081 ms 1.129 ms 0.995 ms <---- My ADSL PPP half bridge modem
2 125-239-160-1.jetstream.xtra.co.nz (125.239.160.1) 50.825 ms 51.602 ms 83.587 ms
3 MDR-IP03e-3-1-0.akbr3.global-gateway.net.nz (202.50.236.114) 131.381 ms 156.833 ms *
4 ge-2-3-0-42.akbr3.global-gateway.net.nz (202.50.236.113) 355.388 ms 379.785 ms 454.063 ms
5 so-1-2-0.0-sjbr2.global-gateway.net.nz (203.96.120.202) 512.118 ms 510.928 ms 516.124 ms
6 so-3-1-0.pabr3.global-gateway.net.nz (210.55.202.233) 508.187 ms 556.411 ms so3-2-0.pabr3.global-gateway.net.nz (202.50.232.150) 568.220 ms
7 paix.bungi.net (198.32.176.7) 512.915 ms 561.855 ms 582.087 ms
8 vlan902.br02-200p-sfo.unitedlayer.com (207.7.129.74) 534.111 ms 514.641 ms 520.112 ms
9 207.7.129.14 (207.7.129.14) 592.185 ms 583.280 ms 614.158 ms
10 ftp.citylink.co.nz (202.7.6.9) 512.107 ms 490.767 ms 502.089 ms

but I'm not a full-time Network Engineer, so I cannot ascertain why TCL would get ~200kb/s average while on Xtra we get <50 kb/s (b = bytes)

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lonney

85 posts

Master Geek

# 89103 2-Oct-2007 16:17

http://debian.co.nz/ might be an option (7 hops on xnet).

ftp.citylink.co.nz 6 hops on xnet

1     1 ms    <1 ms    <1 ms my.router [192.168.1.1]
2    62 ms    63 ms    63 ms ip-58-28-15-72.wxnz.net [58.28.15.72]
3    68 ms    67 ms    63 ms ge-1-0-0-57-jcore3.wxnz.net [58.28.13.49]
4    75 ms    66 ms    64 ms ge-0-0-0-akl-core2.wxnz.net [58.28.8.9]
5    65 ms    64 ms    61 ms anycast.ape.net.nz [192.203.154.5]
6    63 ms    64 ms    62 ms ftp.citylink.co.nz [202.7.6.9]

Not sure why Telecom/Xtra and TC dont peer?, must be a (good?) reason for it.

Glazza

268 posts

Ultimate Geek

Trusted

# 89108 2-Oct-2007 16:57

Both those traceroutes are going via International pipes, generally contented international pipes...

Both the WxC, and the traceroute below are using national only...

  1     1 ms     1 ms     1 ms     localhost [xxx.xxx.xxx.xxx]
  2    48 ms    39 ms    38 ms akl-mt3a.airnet.net.nz [202.137.240.225]
  3    37 ms    40 ms    39 ms anycast.ape.net.nz [192.203.154.5]
  5    40 ms    40 ms    30 ms ftp.citylink.co.nz [202.7.6.9]