[Bug 6086] Master of Orion 2 hangs as soon as mouse is moved

http://bugs.winehq.org/show_bug.cgi?id=6086

--- Comment #68 from Pierre Willenbrock   2009-01-20 15:45:35 ---
I think this has not been said clearly enough: For me(and Janosch), the hanging
cursor-problem gets better _when_ we use multiple cpu cores. It only manifests
itself in "cursor moves only every other minute" if wine is restricted to a
single cpu. Otherwise, one gets a jumpy, but otherwise working cursor. The
reason for this can be easily seen: the message thread gets more time to
actually handle messages.

I guess this happens: The kernel scheduler immediately schedules the drawing
thread after its WM_USER+1 message comes back from the message thread, and
completes so fast, that the next time the message thread runs and looks for
messages, there is another WM_USER+1 message asking for swap. This happens
inside the second nested GetMessage, and only the outer one processes
WM_MOUSEMOVEs, so there is not much that can be done from inside GetMessage.