BIND 9.10 dlz(BDB): slow query times

[Evan Hunt]

On Fri, Nov 07, 2014 at 12:27:55AM +0800, ShanyiWan wrote:
> 100000+ domains, 500000 records,
> 
> Most of the query time in 1-3 seconds, is this normal?

DLZ is slow, but it's not that slow.  I would guess the delay you're
seeing is due to the time it takes to retrieve data from the berkeley
DB.  How long does it take to query the database directly?

Turning on minimal-responses reduces the number of database lookups
required for each query, which might help if the database is slow.  There
may also be a bdb mailing list that can recommend database optimizations.

-- 
Evan Hunt -- each at isc.org
Internet Systems Consortium, Inc.