[Gllug] ADSL providers

[Luke Sheldrick]

On Wed, Oct 29, 2008 at 04:20:18PM +0000, Pete Stean wrote:
> OK, on the OpenDNS issue - I think this is all smoke and mirrors and I have yet to see any *empirical* evidence that proves otherwise
> 
> How can they possibly be faster than your ISP when traffic *has* to make more jumps from you to their DNS servers in the first place - you can't take your ISP out of the loop. It defies common sense and the laws of physics
> 
> Tests I have conducted at home and at a friends prove this - pings twice as high using OpenDNS rather than the ISPs servers - how could it possibly be otherwise?
> 
> Pete

It's not all about how quickly you can ping a server... agreed it is a factory. Say you can get to your ISPs cache in 5ms, and oDNS in 10, if your ISP's cache takes 20ms to reply (20+5) and oDNS replies 1ms (1+11), oDNS is faster. In practice I have seen better results with oDNS than local ISPS. oDNS's are setup to provide DNS, and specialise in this. ISPs are jack of all trades, and quite often don't get it all perfect :) 


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