http://bugs.winehq.org/show_bug.cgi?id=21994
--- Comment #11 from NSLW lukasz.wojnilowicz@gmail.com 2010-03-11 04:41:57 --- Created an attachment (id=26744) --> (http://bugs.winehq.org/attachment.cgi?id=26744) Usage of cores on MS Windows XP
As you can see in the attachment, GTA 4 uses both cores equally on MS Windows XP. On Linux GTA4 uses only one core the second core is used by xorg+wineserver+...
The expected behaviour: GTA 4 should use both cores on Linux