Generic reasons for recursive performance not to peg CPU?

[Doug Barton]

Thanks for the response, but that's not it. The auth-only responses are 
generating a lot more traffic than the recursive.

Doug


On 01/12/2014 05:21 PM, Sten Carlsen wrote:
> Wild guess: network bandwidth runs out before CPU? Why the difference, I
> have no clue.
>
> On 13/01/14 02.16, Doug Barton wrote:
>> Howdy,
>>
>> Without going into too much detail, doing some performance testing and
>> am seeing a weird result. On the same systems authoritative queries
>> will happily peg the CPU. However when running recursive queries (with
>> a small zone, all data cached before testing) the CPU never gets above
>> 80%. The disk is nearly inactive on both systems, and there is no
>> swapping. Using BIND 9.9.4.
>>
>> Is there perhaps something obvious I'm overlooking here? Any
>> suggestions are welcome.