Recursive bind becomes unresponsive with high load

Tony Finch dot at
Thu Mar 31 16:08:43 UTC 2016

Michael Brunnbauer <brunni at> wrote:
> I am using bind on a server that does massive crawling with a multithreaded
> Java app. This server occasionally has to do lookups for hosts in our local
> zone - for which it is not authoritative - and those lookups tend
> to fail when the load is high (e.g. >1000 recursing clients). This suggests
> some kind of congestion.

Have you tried adjusting the clients-per-query and max-clients-per-query

f.anthony.n.finch  <dot at>  -  I xn--zr8h punycode
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