DNS response time

Stephane Bortzmeyer bortzmeyer at nic.fr
Tue Nov 30 21:28:41 UTC 2004

On Tue, Nov 30, 2004 at 02:51:12PM -0000,
 afaf <afaf.e at menara.ma> wrote 
 a message of 6 lines which said:

> I wish to know if a significant number of created zones in a DNS
> server can increase the DNS response time .

Like for every performance problem, it is faster and safer to test
before asking. Set up a lab, create dummy zone files, test them with
queryperf (in BIND's contrib) or with echoping or with dig and
increase their sizes.

In my tests, with BIND 9, yes: the maximum query rate diminishes when
the zone file grows.

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