At 06:44 AM 2/01/2006 +0700, you wrote:

>Hello Helen,
>
>On Monday, January 2, 2006, 5:53:18, You wrote:
>
> > Yes, it's true for the Superserver version, but not for Classic.
>
> > With SS you should keep the CPU affinity to one CPU. By default, the value
> > (a bitmask) is 1, which sets the affinity to CPU 0. Read the release notes
> > and the notes in Firebird.conf. The release notes provide the algorithm
> > for calculating the CPU affinity bitmask.
>
> > ./heLen
>
>If I set the affinity to CPU 0, will the performance to drop? Or it
>just make the performance is better than set the affinity to CPU more
>then 0?

No. As I already told you, the affinity is set by default to CPU 0. You
should not try to change it, unless for some reason you want to set it to
CPU 1 instead.

There should be no performance difference between CPU 0 and CPU 1.

Performance will die if you change the affinity mask to two CPUs.

./heLen