From: "Paul Ranson" 

Old Novell (3.x) only supported cooperative threading, later versions
implemented pre-emptive. So perhaps Netware itself doesn't handle
co-operative threads well in a pre-emptive environment. They would be
threads inside a thread. The application would be scheduling internally on
the assumption that it had the entire CPU to itself.

Win32 has a nicely integrated and very efficient co-operative threading
implementation called 'Fibers'. It's worth reading some of the background
on MSDN including how SQL Server uses them.

Paul

"Ellen K."  wrote in message
news:m1nv01dvk03igv1a6k11kunudtgop5kiae{at}4ax.com...
> Apparently turning off multi-threading in Novell greatly improves the
> performance of the legacy database.   Any theories as to why this should
> be so?

--- BBBS/NT v4.01 Flag-5