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Re: [Koha-devel] koha.org and kohadocs.org
From: |
Chris Nighswonger |
Subject: |
Re: [Koha-devel] koha.org and kohadocs.org |
Date: |
Thu, 20 Dec 2007 22:31:07 -0500 |
On 12/20/07, Bünzli Daniel <address@hidden> wrote:
>
> Le 20 déc. 07 à 17:31, Chris Nighswonger a écrit :
>
> > Next time from both locations do a traceroute from *nix teminal to
> > both problem sites.
>
> Since this is happening right at the moment, here you have :
>
> > > traceroute www.koha.org
> > traceroute to www.koha.org (66.249.19.54), 64 hops max, 40 byte
> > packets
> > 1 * * *
> > 2 1-48.2-85.cust.bluewin.ch (85.2.48.1) 16.947 ms 20.818 ms
> > 17.320 ms
> > 3 net481.bwrt2zhb.bluewin.ch (195.186.121.1) 26.200 ms 19.811
> > ms 18.686 ms
> > 4 po20.bwrt2inb.bluewin.ch (195.186.0.101) 15.428 ms 21.826 ms
> > 23.696 ms
> > 5 195.186.0.126 (195.186.0.126) 17.993 ms 18.317 ms 24.928 ms
> > 6 i79zhb-015-vla200.bb.ip-plus.net (138.187.129.62) 22.771 ms
> > 21.917 ms 18.081 ms
> > 7 i79tix-025-xxx1-1.bb.ip-plus.net (138.187.129.82) 15.307 ms
> > 19.798 ms 17.700 ms
> > 8 sl-gw10-zur-5-0-1.sprintlink.net (80.93.9.125) 21.013 ms
> > 14.940 ms 25.695 ms
> > 9 sl-bb20-zur-13-0.sprintlink.net (80.93.8.37) 26.198 ms 15.977
> > ms 21.069 ms
> > 10 sl-bb20-fra-11-1.sprintlink.net (213.206.129.155) 21.379 ms
> > 22.794 ms 26.077 ms
> > 11 sl-bb21-par-4-0.sprintlink.net (213.206.129.149) 31.866 ms
> > 31.188 ms 35.398 ms
> > 12 sl-bb24-nyc-9-0.sprintlink.net (144.232.9.166) 114.674 ms
> > 119.987 ms 116.966 ms
There appears to be a bottleneck between hop 11 and 12 on Sprint's
network. (Not uncommon on this provider from my experience with them.)
Looks like a long-haul link from Paris to New York my guess from the
naming conventions.
>
> > > traceroute www.kohadocs.org
> > traceroute to www.kohadocs.org (66.249.19.54), 64 hops max, 40 byte
> > packets
> > 1 * * *
> > 2 1-48.2-85.cust.bluewin.ch (85.2.48.1) 21.717 ms 14.797 ms
> > 16.971 ms
> > 3 net481.bwrt2zhb.bluewin.ch (195.186.121.1) 22.746 ms 17.641
> > ms 19.881 ms
> > 4 po20.bwrt2inb.bluewin.ch (195.186.0.101) 16.482 ms 24.118 ms
> > 23.033 ms
> > 5 195.186.0.126 (195.186.0.126) 30.118 ms 17.598 ms 26.106 ms
> > 6 i79zhb-015-vla200.bb.ip-plus.net (138.187.129.62) 25.305 ms
> > 18.867 ms 22.044 ms
> > 7 i79tix-025-xxx1-1.bb.ip-plus.net (138.187.129.82) 16.521 ms
> > 38.712 ms 16.316 ms
> > 8 sl-gw10-zur-5-0-1.sprintlink.net (80.93.9.125) 20.904 ms
> > 37.214 ms 18.249 ms
> > 9 sl-bb20-zur-13-0.sprintlink.net (80.93.8.37) 27.121 ms 17.717
> > ms 19.475 ms
> > 10 sl-bb20-fra-11-1.sprintlink.net (213.206.129.155) 26.492 ms
> > 21.837 ms 24.078 ms
> > 11 sl-bb21-par-4-0.sprintlink.net (213.206.129.149) 39.422 ms
> > 39.418 ms 49.981 ms
> > 12 sl-bb24-nyc-9-0.sprintlink.net (144.232.9.166) 190.203 ms
> > 154.597 ms 136.152 ms
Same link is bottlenecked here as well.
>
> but, (always so far) reachable :
>
> > > traceroute git.koha.org
> > traceroute to git.koha.org (64.79.208.60), 64 hops max, 40 byte
> > packets
> > 1 * * *
> > 2 1-48.2-85.cust.bluewin.ch (85.2.48.1) 15.283 ms 14.775 ms
> > 15.158 ms
> > 3 net481.bwrt2zhb.bluewin.ch (195.186.121.1) 16.576 ms 13.775
> > ms 15.185 ms
> > 4 po20.bwrt2inb.bluewin.ch (195.186.0.101) 15.237 ms 15.936 ms
> > 15.530 ms
> > 5 195.186.0.126 (195.186.0.126) 21.011 ms 14.527 ms 15.446 ms
> > 6 i00nye-005-pos12-0.bb.ip-plus.net (138.187.159.6) 111.069 ms
> > 112.085 ms 111.039 ms
Bottleneck between hops 5 and 6 here. Again, I'm guessing a long haul
link from Europe to New York based on the hostname of hop 6. hop 5
appears to be in Switzerland (.ch tld).
> > 16 gimli.metavore.com (64.79.208.60) 208.433 ms 207.933 ms
> > 206.965 ms
Notice here, the server hosting koha git did respond. However, with
RTT's like these there is a good chance some of the packets TTL's are
expiring before they reach one end or the other.
The server hosting the two websites may be behind a firewall or the
gateway may be setup to drop ICMP packets thus there is no final
response in the traceroutes for those sites.
Not much you or koha can do abou this. Probably the State side routers
are overloaded. Sprint has a bad habit of doing this in my experience.
There may also be TCP window scaling misconfigurations between the
endpoints on the trans-atlantic links which will cause these kinds of
issues as well.
Traceroutes from both of your two different physical locations would
probably confirm issues on the same endpoints.
Kind regards,
--
Chris Nighswonger
Faculty Member
Network & Systems Director
Foundations Bible College & Seminary
www.foundations.edu
www.fbcradio.org
Re: [Koha-devel] koha.org and kohadocs.org, Mason James, 2007/12/20