Subject Re: [firebird-support] Dual Processor
Author Daniel Rail

At September 25, 2003, 09:03, Helen Borrie wrote:

> At 08:43 AM 25/09/2003 -0300, you wrote:
>>Apparently, it's not as bad under Linux as it is under Windows.

> Actually, it hasn't been demonstrated to occur under Linux at all. All
> things being equal, SMP should work properly on 1.0 and 1.5 SS for Linux.

Thanks for the clarification. I wasn't 100% sure.

>>With FB 1.0 SS and FB 1.5 SS, there's a parameter in the configuration
>>file to set the CPU affinity.

> No, it only works for Windows. The misleading note in the 1.5 draft
> release notes was mine - apologies.

Thanks again.

>> > We are using FB 1.0.3 - Fb 1.5 addresses a lot of the SS dual proc
>> > issues ?
>>FB 1.5 SS still doesn't address the SMP issue correctly

> It doesn't address it at all. If you want multiple processor affinity on
> Windows, you have to use Classic.

I mentioned it that way, because some might think that the new thread
scheduler settings could be tweaked to make SS work on Windows
SMP/hyperthread. For which, it is not true.

Best regards,
Daniel Rail
Senior System Engineer
ACCRA Group Inc. (
ACCRA Med Software Inc. (