FreeLists / arachne / [arachne] Re: number ip address

[Steve <steve@xxxxxxxxxxxxxxx>]

Arachne at FreeLists---The Arachne Fan Club!

On Sun, 23 Sep 2007, Destiny wrote:

> Also is there a method to test speed of several dns servers?  Ping does not
> seem to work.
  Most dns servers are set to ignore pings.  The way I would go about 
checking dns response time in FreeBSD:
For primary dns:

$ time nslookup google.com 24.92.226.9
<many lines of output>
real 0m0.048s

-----

Secondary dns:

$ time nslookup google.com 24.92.226.102
<many lines of output>
real    0m0.052s


Note:  Response time varies quite a bit depending on server load.  A 
single instance of query response time doesn't show much, and in order to 
get any kind of meaningful server performance comparison data, you'd have 
to run several tests on each at the times you normally use the computer 
most.  I once saw the above test take as long as a quarter second.
  Just for the heck of it, I tried timing your dns server but, as 
expected, it wouldn't answer a query from outside its own network.
"time" and "nslookup" are also common tools in just about any linux 
distro.  If you don't have a linux installed, you could always boot a 
linux livecd and run the test from there.
  nslookup is available for DOS, but I'm not aware of anything you might 
use in place of the 'nix "time" command to see how long the nslookup 
command takes.  (How accurate is your stopwatch  ;-)
--
Steve Ackman
http://twoloonscoffee.com       (Need beans?)
http://twovoyagers.com          (glass, linux & other stuff)
                 Arachne at FreeLists                  
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