Performance of auth-only vs recursor.

[Sven Ingebrigt Ulland]

On Tue, May 09, 2006 at 04:35:53PM -0400, Kevin Darcy wrote:
> Sven Ingebrigt Ulland wrote:
> >On Tue, May 09, 2006 at 02:04:25PM +0200, Sven Ingebrigt Ulland wrote:
> >
> >>Auth-only: 11,123 +/- 58 requests/second. (very small variation)
> >>Recursor:   7,541 +/- 18 requests/second. (very small variation)
> >
> >Um, that should be the other way around. The recursor outperforms the
> >auth-only. Sorry about the mixup.
> >
> Those numbers are so low, it's anyone's guess where the bottleneck is. 
> 58 qps works out to barely more than 5 million queries in the course of 
> a day, and I have aging old Sparc Ultra 2s, almost a decade old, that 
> can do way more than that. With your hardware specs, I think your 
> numbers should be much higher.

Oh, those numbers are over 11 thousand queries per second for the
recursor, and over 7 thousand qps for the auth-only. The numbers
behind them are the standard deviations obtained from running ten
consecutive tests, and show that there was very little variation in
the tests.

I'm suspecting some differences in code-paths between the two, that
can be the cause for the differences in qps performance. It would be
great if someone knew details on this.

Sven