http://bugs.winehq.org/show_bug.cgi?id=13335
--- Comment #134 from Michael Jenkins mdjenkins@comcast.net 2009-01-20 09:22:58 --- While it isn't specifically a 64-bit issue there does appear to me to be two parts to this bug. The first part being that wine reserves large amounts of virtual memory that eventually starves the opengl engine of resource. The second part being how virtual memory is allocated when greater than 4G of RAM exists (which exists only in a 64-bit environment).
System spec: Asus M3N-HT Phenom 9850 8gb RAM
Without the patch the out of memory error is frequent and random. With the hack patch from bug 10778 applied; I can play for hours with gradual slowdown. With this patch applied; the memory error occurs the moment the OpenGL engine kicks in. With this patch applied and mem=4G passed to the kernel on boot; I can play WoW for hours without issue.
When swapping out my CPU with a Phenom II 940 (remember AMD puts the memory controller on die).
Without the patch the out of memory error is frequent and random. With the hack patch from bug 10778 applied; the out of memory error is frequent and random. With this patch applied; the memory error occurs the moment the OpenGL engine kicks in. With this patch applied and mem=4G passed to the kernel; on boot I can play WoW for hours without issue.
Hope this helps.