[LUAU] Slow internet response with different nameservers

Maddog maddog at heavymetalradio.net
Sun Jun 4 16:09:46 PDT 2006


Here is what I got from 3 of those digs Al, much different than your results 
This cannot be an accurate measure because it doesn't take into 
consideration, network traffic and other factors that may inhibit quick 
responses. Note that RR is the fastest respone here. Also note that is goes 
across the ocean to orange county.
MD

dig soa hawaii.rr.com | more

; <<>> DiG 9.3.1 <<>> soa hawaii.rr.com
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 42122
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 2

;; QUESTION SECTION:
;hawaii.rr.com.                 IN      SOA

;; ANSWER SECTION:
hawaii.rr.com.          86395   IN      SOA
dns-pri-01.orange.rr.com. help.socal.rr.com. 2006060200 3600 600
604800 86400

;; AUTHORITY SECTION:
hawaii.rr.com.          78718   IN      NS      dns-pri-01.orange.rr.com.
hawaii.rr.com.          78718   IN      NS      dns-sec-01.orange.rr.com.

;; ADDITIONAL SECTION:
dns-pri-01.orange.rr.com. 3600  IN      A       66.75.160.39
dns-sec-01.orange.rr.com. 3600  IN      A       66.75.160.38

;; Query time: 85 msec
;; SERVER: 192.168.0.1#53(192.168.0.1)
;; WHEN: Sun Jun  4 13:03:01 2006
;; MSG SIZE  rcvd: 167

 dig soa hawaiiantel.net | more

; <<>> DiG 9.3.1 <<>> soa hawaiiantel.net
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 28424
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 2

;; QUESTION SECTION:
;hawaiiantel.net.               IN      SOA

;; ANSWER SECTION:
hawaiiantel.net.        86400   IN      SOA
HNLLDNSDHCP.hawaiiantel.net. dnsadmin.hawaiiantel.net. 595 3600 900
604800 600

;; AUTHORITY SECTION:
hawaiiantel.net.        24650   IN      NS      HNLLDNSDHCP.hawaiiantel.net.
hawaiiantel.net.        24650   IN      NS      WPHUDNSDHCP.hawaiiantel.net.

;; ADDITIONAL SECTION:
HNLLDNSDHCP.hawaiiantel.net. 80543 IN   A       72.235.80.4
WPHUDNSDHCP.hawaiiantel.net. 80543 IN   A       72.235.80.12

;; Query time: 156 msec
;; SERVER: 192.168.0.1#53(192.168.0.1)
;; WHEN: Sun Jun  4 13:04:15 2006
;; MSG SIZE  rcvd: 162

dig soa lava.net | more

; <<>> DiG 9.3.1 <<>> soa lava.net
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 37027
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 4, ADDITIONAL: 3

;; QUESTION SECTION:
;lava.net.                      IN      SOA

;; ANSWER SECTION:
lava.net.               21600   IN      SOA     ns1.lava.net.
hostmaster.lava.net. 2006060200 7200 3600 604800 21600

;; AUTHORITY SECTION:
lava.net.               12549   IN      NS      ns2.lava.net.
lava.net.               12549   IN      NS      ns3.lava.net.
lava.net.               12549   IN      NS      ns01.backupdns.com.
lava.net.               12549   IN      NS      ns1.lava.net.

;; ADDITIONAL SECTION:
ns1.lava.net.           3480    IN      A       64.65.64.17
ns3.lava.net.           73092   IN      A       64.65.64.65
ns01.backupdns.com.     3834    IN      A       199.242.242.199

;; Query time: 153 msec
;; SERVER: 192.168.0.1#53(192.168.0.1)
;; WHEN: Sun Jun  4 13:04:51 2006
;; MSG SIZE  rcvd: 207

----- 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
>
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> 




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