UDP performance.

[Dave]

On Feb 28, 2007, at 3:06 AM, Peter Losher wrote:

> Ivan Voras wrote:
>
>> I agree in general, but MySQL performance is very exposed as an  
>> advocacy
>> issue - it has traditionally been the source of statements like
>> "FreeBSD's threading implementation is weak/bad/broken".
>
> And these days ISC can't consciously recommend FreeBSD for use on
> high-traffic DNS servers because UDP performance has (frankly) gone
> downhill since 5.x.
>
> We recently put a stock Fedora Core 6 and a stock FreeBSD 6.2 on the
> same HW (HP ProLiant DL320 G5 Dual Core Xeons w/ 16GB RAM) and running
> BIND 9.4.0 and a well known ccTLD zone that we slammed a query stream
> to.  On a single threaded BIND, there was a 20% advantage to Linux,  
> on a
> multi threaded build, Linux trounced FreeBSD (39k to 89k queries/sec)
>
> There's also been other analysis done by Marcelo Amarai @ Registro.br
> that was posted to freebsd-net back last September.
>
> http://lists.freebsd.org/pipermail/freebsd-net/2006-September/ 
> 011748.html
>
> I know there have been some discussion between some of the FreeBSD  
> folks
> and my colleague Mark Andrews about improving BIND's performance on
> FreeBSD.  Is there anything coming down the pipeline that will help  
> stem
> this tide in 7.x?

I also did some testing and came up with different numbers:

http://lists.freebsd.org/pipermail/freebsd-performance/2006-October/ 
002267.html

I still need to go back and check 9.4.0 and vary the zone size.  My
zone was very small.  If you have any suggestions, let me know.  My
goal in testing was to see what was the best configuration for bind
and how it compared to Linux.

--
Dave