adrian_avila_mtz wrote:

> Is there any performance test comaparing them?
>

There have been performance tests, but there is no
single definitive test. In many cases, Firebird 2
is faster than Firebird 1.5. In a few, it's slower
but it gets the right answer consistently. No
doubt there are some odd conditions where 1.5 is
faster and gets the right answers.

Two areas where you will definitely notice performance
improvements are index garbage collection with long
strings of duplicate values, and general index performance
with large page sizes.

Regards,


Ann