better performance with 32 bit ! why?

[David Sparro]

On 6/28/2011 11:15 AM, iharrathi.ext at orange-ftgroup.com wrote:
> Hi all,
> I'm testing the same version of bind 9.4-ESV-R4-P1 on two server, one is
> a 32 bit (on which i have a redhat 32 bit) and the second a 64 bit
> server on which i have a redhat 64 bit.
> on the 32 bit i reach 70000 qps but on the 64 bit i only reach 50000 qps
> (using resperf) and also with tcpreplay.
> Is it normal that bind when compiled and installed on a 32 bit server
> have better performance than bind when compiled and installed on a 64
> bit server.
> the only différence between the two server is 64 bit vs 32 bit ( same
> RAM, same Disk, same NIC,...) and CPU is better on the 64 bit (2 Intel
> E5310 quad-core 1.6Ghz) than the 32 bit(2 Intel Xeon duad-core 2.33Ghz).
> Thanks.
>

The 32 bit rig is faster (2.33Ghz).

-- 
Dave