> If anyone has valid ammunition that I can take to a client that is
> making a fuss about Firebird performance on Windows compared to
> MSSQL

Some numbers comparing FB 2.0 and MS SQL Server 2000 on TPC-R test (22
different queries for the DSS system):

MSSQL/FB2

70%
21%
505%
3718%
469%
211%
5%
57%
125%
89%
548%
679%
87%
30%
89%
0%
215%
136%
94%
372%
344%
194%

As you see, sometimes it is much more faster and sometimes it is
really slow. If you're interested, you can use the AS3AP benchmark
(available from our CVS) and test it on your computer (possible some
changes are needed, but I can help you there).

What seems to me to be much more important, is the amount of
administration tasks, which is higher in SQL Server. Firebird just
runs and you won't see it. And the price.

But I guess, if the customer really-really wants to have MS SQL Server
and you really-really wants to sell him your application, you have no
other choice.

Roman