http://bugs.winehq.org/show_bug.cgi?id=11674
--- Comment #4 from Keith Constable kccricket@gmail.com 2008-12-15 17:52:14 --- Created an attachment (id=17971) --> (http://bugs.winehq.org/attachment.cgi?id=17971) Graph of CPU usage while running wow.exe
Dual core Athlon 64 X2; kernel 2.6.27 SMP; Ubuntu 8.10; Wine 1.1.10
As you can see, the usage of one core is inversely proportional to the usage of the other. If I run something else in the background, say WinXP in VMware, then both cores are utilized fully.