FreeBSD vs Windows 2000 "Advanced" Server

[Antony T Curtis]

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On Thursday 28 Aug 2003 2:55 pm, Sheldon Hearn wrote:
> On (2003/08/28 14:50), Antony T Curtis wrote:
> > > Oops, make that about 8,000 threads. :-)
> > >
> > > And I forgot to include the class source.
> >
> > I'm just curious, which patchset and which threading library?
>
> Patchset 3, libc_r.

Hmm... I was hoping it was libkse... I plan to try to build it and play with 
it myself soon.

With pure userland threads (libc_r) it will only present 1 real thread to the 
kernel. libc plays all kind of fun 'n games to simulate threading.

> But it seems that not all Windows 2000 Advanced Server installations
> have this problem.
>
> I can get about the same number of threads running on a single-CPU box
> with no service pack.  So I've narrowed it down to either broken
> Hyperthreading (HTT) support in Windows 2000, or a problem with service
> pack 3 or 4.

AFAIK, WinNT is not that scalable as CPU++... and that it's 'sweet spot' is 
around 4 CPUs.

- -- 
ANTONY T CURTIS                     Tel: +44 (1635) 36222
Abacus Polar Holdings Ltd           Fax: +44 (1635) 38670
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