High latency setting optimization

Simon Deziel simon+unbound at sdeziel.info
Fri May 25 20:53:56 UTC 2018


Having a local copy of the root zone using the auth-zone feature (or on
a local NSD) might help a little.

On 2018-05-25 03:31 PM, Florian Lohoff via Unbound-users wrote:
> 
> Hi,
> 
> We are running multiple unbound caches behind very long latency 
> sat links. We are seeing RTT of at least 1000ms. 
> 
> Sometimes recursing times spike up to 20 Seconds.
> 
> Is there an optimization guide on how to fine tune parameters
> for those situations?
> 
> I have already seen jostle-timeout. I am pretty shure prefetching
> has a huge impact.
> 
> Anything else?
> 
> Flo
> 




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