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

[Jan Arild Lindstrøm]

At 01:16 25/09/2008, JINMEI Tatuya / =?ISO-2022-JP?B?GyRCP0BMQEMjOkgbKEI=?= wrote:
>At Mon, 22 Sep 2008 07:24:02 +0100,
>Jan Arild Lindstrøm <jal at telenor.net> wrote:
>
>> >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.
>> 
>> Auch! Is that really correct?  Should it not then be called "max-queries-per-client" and
>> not "max-clients-per-query"?  
>
>Oops, I was wrong.  I was confused about the case where a single (or
>multiple) client keeps sending a high volume of different bogus
>queries (for which max-clients-per-query doesn't help).
>
>I now see the problem.  It's really strange to have more than 10,000
>recursive clients for the same query while max-clients-per-query is
>100.  I have no specific idea about how this could happen, but I'd
>suspect this may be a thread-related bug.  Is it possible to rebuild
>named without threads and see if the same problem happens?

I do not know if our T2000 will manage to reply fast enough, or if it fast will get saturated 
if it uses only one thread for alle the traffic. I will rebuild and test a little in parrallell on one
of them. 

Regards
Jan Arild Lindstrom