On Wed, May 25, 2016 at 1:11 PM, [email protected]
[firebird-support] <[email protected]> wrote:

>
>  Now on the flip side, the performance sucks, it is worst than with FB
> 2.54, and when looking at the task manager on windows it appears only one
> processor it doing the job, as if the code was not SMP enabled.... very
> strange.
>

One possibility is that you're testing V3.0 SuperServer single user.  In
V3.0, Firebird is multi-threaded at the client statement level.  It does
not decompose queries and schedule the pieces on different processors.
That means that a full-table scan runs on only one processor.  Two
simultaneous full-table scans will run on two processors.

Good luck,

Ann

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