[Pdns-users] Recursor has trouble with congested links?

[bert hubert]

On Sat, Jun 10, 2006 at 02:40:59PM +1000, Ian Tester wrote:
> 	I've been trying to use the PowerDNS recursor on my family's home
> network. We have a slow 256/64 ADSL link and a few users who frequently
> clog it up with lots of downloads and uploads. During these times I've
> found that the recursor times out or something and returns a negative
> response.

For now, you'd need to grep for all occurences of 

	MT->waitEvent(blah blah, 1);

And replace them by, say:

	MT->waitEvent(blah blah, 2);

> I've set "client-tcp-timeout=60" in recursor.conf, but that's dealing with
> the wrong side of the connection isn't it?

Indeed.

> Is there anything that can be done to improve the recursor's resilience to
> a clogged internet connection?

Not without recompiling currently. Try installing a wondershaper that will
prioritise small packets otherwise.

I'll try to fix this more permanently.

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