[LUAU] Slow internet response with different nameservers

Maddog maddog at heavymetalradio.net
Sun Jun 4 16:35:58 PDT 2006


Further testing from a Windoze box using pathping shows some interesting 
results: (This should be prefaced by saying that I am on a RR connection but 
nonetheless the results are interesting, especially when you consider the 
number of hops and location of the Hawaiiantel servers.)

MD

>pathping ns1.lava.net

Tracing route to ns1.lava.net [64.65.64.17]
over a maximum of 30 hops:
  0  broadcast [192.168.0.90]
  1  192.168.0.1
  2  10.102.96.1
  3  gig2-1.oahuhikane-rtr1.hawaii.rr.com [24.25.224.117]
  4  srp5-0.oahuhikili-gsr2.hawaii.rr.com [24.25.224.70]
  5  srp5-0.oahuhimili-gsr1.hawaii.rr.com [24.25.224.65]
  6  pop1-hon-P2-0.atdn.net [66.185.137.57]
  7  bb2-hon-P0-0.atdn.net [66.185.137.50]
  8  pop2-hon-P0-1.atdn.net [66.185.137.67]
  9  pihana.atdn.net [66.185.137.78]
 10  202.177.194.193
 11  202.177.194.10
 12  malasada.lava.net [64.65.64.17]

Computing statistics for 300 seconds...
            Source to Here   This Node/Link
Hop  RTT    Lost/Sent = Pct  Lost/Sent = Pct  Address
  0                                           broadcast [192.168.0.90]
                                0/ 100 =  0%   |
  1    0ms     0/ 100 =  0%     0/ 100 =  0%  192.168.0.1
                                0/ 100 =  0%   |
  2    6ms     0/ 100 =  0%     0/ 100 =  0%  10.102.96.1
                                0/ 100 =  0%   |
  3    7ms     0/ 100 =  0%     0/ 100 =  0% 
gig2-1.oahuhikane-rtr1.hawaii.rr.c
om [24.25.224.117]
                                0/ 100 =  0%   |
  4    7ms     0/ 100 =  0%     0/ 100 =  0% 
srp5-0.oahuhikili-gsr2.hawaii.rr.c
om [24.25.224.70]
                                0/ 100 =  0%   |
  5    8ms     1/ 100 =  1%     1/ 100 =  1% 
srp5-0.oahuhimili-gsr1.hawaii.rr.c
om [24.25.224.65]
                                0/ 100 =  0%   |
  6    9ms     0/ 100 =  0%     0/ 100 =  0%  pop1-hon-P2-0.atdn.net 
[66.185.137
.57]
                                0/ 100 =  0%   |
  7    9ms     0/ 100 =  0%     0/ 100 =  0%  bb2-hon-P0-0.atdn.net 
[66.185.137.
50]
                                0/ 100 =  0%   |
  8    9ms     0/ 100 =  0%     0/ 100 =  0%  pop2-hon-P0-1.atdn.net 
[66.185.137
.67]
                                0/ 100 =  0%   |
  9   10ms     0/ 100 =  0%     0/ 100 =  0%  pihana.atdn.net 
[66.185.137.78]
                                0/ 100 =  0%   |
 10    9ms     1/ 100 =  1%     1/ 100 =  1%  202.177.194.193
                                0/ 100 =  0%   |
 11    9ms     0/ 100 =  0%     0/ 100 =  0%  202.177.194.10
                                0/ 100 =  0%   |
 12   11ms     0/ 100 =  0%     0/ 100 =  0%  malasada.lava.net 
[64.65.64.17]

Trace complete.



>pathping dns-pri-01.orange.rr.com

Tracing route to dns-pri-01.orange.rr.com [66.75.160.39]
over a maximum of 30 hops:
  0  broadcast [192.168.0.90]
  1  192.168.0.1
  2  10.102.96.1
  3  gig2-1.oahuhikane-rtr1.hawaii.rr.com [24.25.224.117]
  4  srp5-0.oahuhikili-gsr2.hawaii.rr.com [24.25.224.70]
  5  srp3-0.oahuhikili-gsr1.hawaii.rr.com [24.25.225.81]
  6  so-0-1-3.lsanca1-rtr1.hawaii.rr.com [24.25.225.230]
  7  POS1-0.ORNGCA4-GSR2.socal.rr.com [66.75.161.25]
  8  GIG2-1.ORNGCA4-SWT2.socal.rr.com [66.75.161.5]
  9  dns-pri-01.orange.rr.com [66.75.160.39]

Computing statistics for 225 seconds...
            Source to Here   This Node/Link
Hop  RTT    Lost/Sent = Pct  Lost/Sent = Pct  Address
  0                                           broadcast [192.168.0.90]
                                0/ 100 =  0%   |
  1    0ms     0/ 100 =  0%     0/ 100 =  0%  192.168.0.1
                                0/ 100 =  0%   |
  2    7ms     0/ 100 =  0%     0/ 100 =  0%  10.102.96.1
                                0/ 100 =  0%   |
  3    7ms     0/ 100 =  0%     0/ 100 =  0%  gig2-1.oahuhikane-rtr1.ha
om [24.25.224.117]
                                0/ 100 =  0%   |
  4    8ms     0/ 100 =  0%     0/ 100 =  0%  srp5-0.oahuhikili-gsr2.ha
om [24.25.224.70]
                                0/ 100 =  0%   |
  5    7ms     0/ 100 =  0%     0/ 100 =  0%  srp3-0.oahuhikili-gsr1.ha
om [24.25.225.81]
                                0/ 100 =  0%   |
  6   81ms     0/ 100 =  0%     0/ 100 =  0%  so-0-1-3.lsanca1-rtr1.haw
m [24.25.225.230]
                                0/ 100 =  0%   |
  7   84ms     0/ 100 =  0%     0/ 100 =  0%  POS1-0.ORNGCA4-GSR2.socal
66.75.161.25]
                                0/ 100 =  0%   |
  8   84ms     0/ 100 =  0%     0/ 100 =  0%  GIG2-1.ORNGCA4-SWT2.socal
66.75.161.5]
                                0/ 100 =  0%   |
  9   85ms     0/ 100 =  0%     0/ 100 =  0%  dns-pri-01.orange.rr.com
0.39]

Trace complete.

>pathping hnlldnsdhcp.hawaiiantel.net

Tracing route to hnlldnsdhcp.hawaiiantel.net [72.235.80.4]
over a maximum of 30 hops:
  0  broadcast [192.168.0.90]
  1  192.168.0.1
  2  10.102.96.1
  3  gig2-1.oahuhikane-rtr1.hawaii.rr.com [24.25.224.117]
  4  srp5-0.oahuhikili-gsr2.hawaii.rr.com [24.25.224.70]
  5  so-0-1-1.tustca1-rtr1.hawaii.rr.com [24.25.224.254]
  6  so-0-1-0-0.gar1.Tustin1.Level3.net [65.58.240.9]
  7  so-7-0-0.mp1.Tustin1.Level3.net [4.68.125.153]
  8  ae-0-0.bbr2.LosAngeles1.Level3.net [64.159.1.126]
  9  ge-0-0-0-55.gar1.LosAngeles1.Level3.net [4.68.102.144]
 10  sprint-level3-oc192.LosAngeles1.Level3.net [64.152.193.74]
 11  sl-bb21-ana-4-0.sprintlink.net [144.232.8.95]
 12  sl-bb22-ana-15-0.sprintlink.net [144.232.1.174]
 13  sl-bb20-prl-10-1.sprintlink.net [144.232.8.157]
 14  sl-gw2-prl-1-0.sprintlink.net [144.232.30.26]
 15     *        *        *
Computing statistics for 375 seconds...
            Source to Here   This Node/Link
Hop  RTT    Lost/Sent = Pct  Lost/Sent = Pct  Address
  0                                           broadcast [192.168.0.90]
                                0/ 100 =  0%   |
  1    0ms     0/ 100 =  0%     0/ 100 =  0%  192.168.0.1
                                0/ 100 =  0%   |
  2    7ms     0/ 100 =  0%     0/ 100 =  0%  10.102.96.1
                                0/ 100 =  0%   |
  3    7ms     1/ 100 =  1%     1/ 100 =  1% 
gig2-1.oahuhikane-rtr1.hawaii.rr.c
om [24.25.224.117]
                                0/ 100 =  0%   |
  4    8ms     0/ 100 =  0%     0/ 100 =  0% 
srp5-0.oahuhikili-gsr2.hawaii.rr.c
om [24.25.224.70]
                                0/ 100 =  0%   |
  5   71ms     0/ 100 =  0%     0/ 100 =  0% 
so-0-1-1.tustca1-rtr1.hawaii.rr.co
m [24.25.224.254]
                                0/ 100 =  0%   |
  6   84ms     0/ 100 =  0%     0/ 100 =  0% 
so-0-1-0-0.gar1.Tustin1.Level3.net
 [65.58.240.9]
                                0/ 100 =  0%   |
  7   85ms     0/ 100 =  0%     0/ 100 =  0% 
so-7-0-0.mp1.Tustin1.Level3.net [4
.68.125.153]
                                0/ 100 =  0%   |
  8   84ms     0/ 100 =  0%     0/ 100 =  0% 
ae-0-0.bbr2.LosAngeles1.Level3.net
 [64.159.1.126]
                                0/ 100 =  0%   |
  9   83ms     0/ 100 =  0%     0/ 100 =  0% 
ge-0-0-0-55.gar1.LosAngeles1.Level
3.net [4.68.102.144]
                                0/ 100 =  0%   |
 10   81ms     0/ 100 =  0%     0/ 100 =  0% 
sprint-level3-oc192.LosAngeles1.Le
vel3.net [64.152.193.74]
                                0/ 100 =  0%   |
 11   82ms     1/ 100 =  1%     1/ 100 =  1%  sl-bb21-ana-4-0.sprintlink.net 
[14
4.232.8.95]
                                0/ 100 =  0%   |
 12   82ms     0/ 100 =  0%     0/ 100 =  0% 
sl-bb22-ana-15-0.sprintlink.net [1
44.232.1.174]
                                0/ 100 =  0%   |
 13  137ms     0/ 100 =  0%     0/ 100 =  0% 
sl-bb20-prl-10-1.sprintlink.net [1
44.232.8.157]
                                0/ 100 =  0%   |
 14  137ms     0/ 100 =  0%     0/ 100 =  0%  sl-gw2-prl-1-0.sprintlink.net 
[144
.232.30.26]
                              100/ 100 =100%   |
 15  ---     100/ 100 =100%     0/ 100 =  0%  broadcast [0.0.0.0]

Trace complete.
----- Original Message ----- 
From: "Al Plant" <webmaster at hawaiidakine.com>
To: "LUAU" <luau at lists.hosef.org>
Sent: Sunday, June 04, 2006 9:21 AM
Subject: Re: [LUAU] Slow internet response with different nameservers


> Richard Z wrote:
>> rr.com has 4 dns server listed, dns4.rr.com, dns3.rr.com, dns2.rr.com
>> and dns1.rr.com. Unfortunately dns4 has very slow response time. In my
>> testing more than 3-4 seconds. Sometime even no response.
>>
>> When there are multiple dns servers, it is up to the dns client to
>> decide how/where to send the queries. Some would send to the first
>> one, wait for response, if no response then send to the second one.
>> Other clients would send queries to all servers at the same time and
>> use the first response. Others use round robin to choose which one to
>> send query first. Without doing some research, I suspect linux always
>> uses the first dns server which has the lowest response time in this
>> case. Windows clients probably query all servers and get the response
>> from the fastest server.
>>
>>
>>
>> On 6/3/06, David Imai <dimai at email.com> wrote:
>>
>>> > The RR servers are in Orange County CA and Oakland CA. The others
>>> are local.
>>>
>>> Even if this is the case, what is causing the slowness? Windows and Mac 
>>> systems don't seem to suffer from the problem. Is it a problem with the 
>>> way the nameservers are configured? or is it a problem with Linux or 
>>> Ubuntu? I think if people who try to use Linux with RR experience this 
>>> problem, they will probably blame Linux. HOSEF is planning to distribute 
>>> desktop machines to people. It wouldn't be good if everyone who used RR 
>>> ran into this problem. so what would be the best way to fix it before 
>>> the user runs into it?
>>>
>>> -- 
>>> ___________________________________________________
>>> Play 100s of games for FREE! http://games.mail.com/
>>>
>>> _______________________________________________
>>> LUAU at lists.hosef.org mailing list
>>> http://lists.hosef.org/cgi-bin/mailman/listinfo/luau
>>>
>> _______________________________________________
>> LUAU at lists.hosef.org mailing list
>> http://lists.hosef.org/cgi-bin/mailman/listinfo/luau
>>
>>
>
> I just read  where a misconfigured DNS server at an ISP can cause the 
> delay. Could this be the case here if it's only the rr connected folos are 
> affected?
>
> I tried a test using a FreeBSD box:
>
> if you run:
> dig soa rr.com | more
> you see a total dns response time of 154 ms from our noc.
>
> dig soa lava.net | more
> you see a total dns response time of 34 ms from our noc.
>
> If this is any indication the rr slowness of response looks like there end 
> and not from your OS on the local box.
>
> Al Plant
>
>  -- Webmaster- http://hawaiidakine.com Admin- http://freebsdinfo.org --
> Supporting Open Source Computing - - FreeBSD 6.* -- Debian Linux 3*
> "All that's really worth doing is what we do for others."- Lewis Carroll
>
> _______________________________________________
> LUAU at lists.hosef.org mailing list
> http://lists.hosef.org/cgi-bin/mailman/listinfo/luau
> 




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