[Unbound-users] Unbound optimal settings.

Felix Schueren felix.schueren at hosteurope.de
Fri Sep 4 05:36:16 UTC 2009


> Each of my dns servers are only running Unbound and nsd, ther are strip
> down. How can I increase drastically the number of request one server
> can process ?
You'll have to use libevent or something similiar - libevent supposedly
compiles on solaris, maybe you should give it a try.

> The systems are mostly idle... and almost 4 Gb of ram is never being used.
you could increase msg/rr cache sizes, that would use more ram, but the
performance gain is probably negligible. What are the stats during
normal three-server operation? How many queries per second? For a rough
estimate, you could look at the network interfaces pps averages for the
the caching nameservers. If you don't collect stats yet, you should
definitively start to do so - have a look at munin & the munin unbound
plugin (in the contrib directory).

Kind regards,


Felix Schüren
Head of Network

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