Hello, Nick!

Monday, September 19, 2011, 6:11:19 PM, you wrote:

NU> I'm looking for comparative data about using 64 vs 32 bit firebird on unix
NU> (centos), benchmarks or experiences gratefully received

I don't have data for unix, but have for Windows - no big difference
in performance between 32 and 64 bits.

64bit Windows a bit (4-6%) faster than 32bit, and
Firebird 64 bit also a bit faster (3-4%) than Firebird 32 bit
on 64bit Windows.
So, the overall performance increase using 64bit OS can be about 7-12%.

--
Dmitry Kuzmenko, www.ib-aid.com