BIND 9.4.x and max-clients-per-query

JINMEI Tatuya / 神明達哉 Jinmei_Tatuya at isc.org
Sat Sep 20 21:50:50 UTC 2008


At Tue, 16 Sep 2008 08:14:43 +0100,
Jan Arild Lindstrøm <jal at telenor.net> wrote:

> is there really none that can explain why clients-per-query get so high even though
> max-clients-per-query = 100.... ? 

First, please be more specific about operational environment: the
exact BIND9 version, not just 9.4.x; build options of BIND9; OS and
its version; perhaps also your named.conf.

Second, limiting max-clients-per-query doesn't help reduce the number
of recursive clients if the same query is sent from different IP
addresses.

Third, having 49662 recursive clients looks so extraordinary.  I
suspect that the real problem is somewhere else.

---
JINMEI, Tatuya
Internet Systems Consortium, Inc.


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