[Unbound-users] Unbound performance issue

Peter Andreev andreev.peter at gmail.com
Fri Mar 26 14:20:51 UTC 2010

Hello, everybody

I have 6-core xeon server with 6 GB RAM, FreeBSD 8.0 and Unbound 1.4.3.
compiled with libevent and without threads.
resperf says that max qps for my server is 4500-6000 and I'm afraid this is
very low even for default config.

In my optimising attempts I was guided by HOW-TO from unbound.net and some
threads from this mail-list and I got the next settings:
         num-threads: 12
         outgoing-range: 7000
         outgoing-port-permit: 32768-65000
         outgoing-port-avoid: 0-32767
         outgoing-port-avoid: 65001-65535
         msg-cache-size: 50m
         num-queries-per-thread: 7000
         msg-cache-slabs: 8
         rrset-cache-size: 100m
         rrset-cache-slabs: 8
         infra-cache-slabs: 8
         infra-cache-numhosts: 100000
         so-rcvbuf: 4m

Other options are default

And resperf said

  Maximum throughput:   4474.000000 qps

It is very low, isn't it?
If so, where I can find detailed description of every option and its
influence on performance?

Thank you in advance.

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