[Pdns-users] # of queries/second ?

Norbert Sendetzky norbert at linuxnetworks.de
Thu Mar 18 14:00:07 UTC 2004


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On Thursday 18 March 2004 14:02, Jeroen Wunnink wrote:
> A friend of mine works for a large dutch ISP, and they're currently
> testing PowerDNS on an LDAP backend..
>
> Currently they're reaching a maximum of 300 queries per second..,
> is this a realistic limit in PowerDNS, or is this some
> misconfiguration on their end ?, because they need more then that..

Depends. I'm getting a maximum of 240 queries/s on my 600MHz notebook 
(PDNS and OpenLDAP on the same machine) if I disable caching 
completely.

Remember that you will never get the same speed with a database 
backend as with an in-memory backend (bindbackend for example). The 
trick is to use high values for cache-ttl and and the other -ttl 
options to avoid lookups from the database.


Norbert

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