[Pdns-users] High latency on recursion without cache

Aki Tuomi cmouse at youzen.ext.b2.fi
Thu Jan 15 13:08:46 UTC 2015


On Thu, Jan 15, 2015 at 09:56:52AM -0300, Ciro Iriarte wrote:
> Hi!, can anybody share what's the usual latency you're seeing with uncached
> queries?.
> 
> I usually see around 2s "Query Time" asking for something like "
> 1.redhat.pool.ntp.org", going as high as 2.8s. The following queries for
> the same name are pretty fast (around 14ms from remote end users). The
> server Internet connection is uncapped (1GbE), so if there are issues with
> ISP routing, I assume it should affect all the network nodes...
> 
> Verified, that the recursor is not configured to use IPv6 (as suggested by
> Peter van Dijk on Twitter).
> 
> Is this expected?
> 
> Regards,
> 
> -- 
> Ciro Iriarte
> http://iriarte.it

Can you take wireshark capture from fresh start (so it doesn't have it
cached) and post it on cloudshark?

Aki




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