es mag schon stimmen, dass vista bei dem ein oder anderen spiel etwas langsamer unterwegs ist als xp. aber ob nun 100fps oder 144fps spielt da wohl doch kaum eine rolle. sollte doch in beiden fällen mehr als spielbar sein.

Vista 64bit nur ca. 3-3,2GB RAM.

XP 64 (64bit, auf dem server 2003 basierend, relativ schlechte
treiberunterstützung)

in cod1 kann man mit 333 fps höher springen als mit 125 und flüssig läufts ja mit beidem

das hat auch halt viel mit hitbox usw zu tun.

When VTuning the client we noticed that under certain conditions the code was spending an abnormal amount of time in RtlReAllocateHeap (see Kernel32.HeapReAlloc, which is forwarded to NTDLL.RtlReAllocateHeap). This did not happen immediately, but rather after a while under specific load, and only on Windows XP. On Windows Vista we got completely different behavior with consistent memory allocation every time.

What this means in the real world is that after a certain amount of time loading resources, the memory started to become fragmented, which lead to degraded performance when copying resources in memory. We do a lot of copying resources in memory, from putting a new ship on the screen to loading up a menu, so after a while that process became slower and slower. This resulted in across-the-board performance drops after playing for a while with a specific playing style. This did not affect all players on Windows XP and not all hardware seemed to be affected equally which is why it was pretty hard to find. Also, this did not happen on Windows Vista.

After some investigation we found that the regular process heap on Windows XP was not optimal for our resource loading needs. We needed to replace it with a specialized Low Fragmentation Heap. This change made the time spent in loading resources much more consistent. Also, the resource object heap is now separate from the other process heaps which allows the memory manager to better manage the blocks for its needs.

The performance on Windows Vista in this regard is still considerably better than on Windows XP but the performance on Windows XP should now be better and much more uniform than before.