Subject Re: [firebird-support] Hyperthreading and Hardware SMP
Author Helen Borrie
At 07:26 AM 12/09/2004 -0700, you wrote:

> > On 12-Sep-2004 07:14:43, Helen Borrie wrote:
> > >If so, this will certainly be an issue for those
> > >deploying shrinkwrap apps use Firebird embedded
> > >people may be reluctant to turn off HT.
> >
> > Yes, correct. HT will present problems for blind deployment.
>What exactly do you anticipate to be problems with Hyperthreading that
>people may encounter, that don't turn this off? And what Windows operating
>systems would be affected by this?

Not sure if you're asking me or him. <g> Apparently, some people observe
the same see-saw effect on machines that support HT, that you get on most
SMP machines. Windows is the only OS so affected and only if you're
running SS. Linux is OK.

Firebird SS can't take advantage of SMP or HT though.

The thing is that the Firebird team isn't willing to throw resources at
papering over the cracks to get rid of the see-saw effect, when the whole
multi-threading model being re-architected in Vulcan.