On Jul 15, 2009, at 12:29 PM, Dave Sparro wrote:

Scott Haneda wrote:
... However, I would like to just get DNS response times.

Perhaps take the list of hosts and feed them to a iterative script calling dig, and fish out the response time? This does add the problem of redirects of course would not be followed, so I would have to pre-fetch all my urls and follow them to get my testing list.

I don't see how you could call the results from any other method "DNS response times."

If you used a web browser to measure from, you'd be introducing all sorts of other latencies. Delays from the web server itself. The webserver may have to talk to a database to output the HTML. The transfer of the actual HTML code isn't instantaneous. (ad that's just off the top of my head).


Correct. So I will end up pulling down the file, extracting the hostnames, following any redirects, and extracting the resulting hostnames. This gives me a nice list of hostnames that I can run through an iterative loop in dig.

I just need to make sure that I am not getting a locally cached result. I suspect there is no way to force a non caches result from the remote ended resolver?
--
Scott * If you contact me off list replace talklists@ with scott@ *

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