[Dnsmasq-discuss] DNS search Order
Simon Kelley
simon at thekelleys.org.uk
Thu Sep 24 12:31:04 BST 2009
Philippe Faure wrote:
> thank you Simon,
>
> I was wondering with version 2.51, will the 10 seconds, and 50 queries
> be configurable?
No easily, it's in the set of parameters at the start of src/config,h
that can be changed by recompilation (I wonder if anyone has ever tunned
any of those: I doubt it)
> I can see in some situations where 50 queries is
> reached very quickly, for example in corporate applications. On the
> other hand, home networks, where little traffic is produced during the
> day, a much longer time frame or quantity of queries may be acceptable.
>
Under heavy load, where the 50 queries limit is reached first, the
effect will be to increase the total load on upstream servers by ~2%,
assuming that there are two of them. (every 50th query will be sent to
both servers.) That doesn't seem to me to be a big enough hit to worry
about. The aim is to track which server is best and subjectively, it
does seem to work with my ISPs slightly dodgy servers.
Cheers,
Simon.
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