Rémi Bernon rbernon@codeweavers.com wrote:
This is a heap implementation based on thread-local structures, that I have been keeping locally for quite some time. The goal was to improve Wine's heap performance in multithreaded scenarios and see if it could help performance in some games.
The good news is that this implementation is performing well, according to third-party heap micro benchmarks. The bad news is that it doesn't change performance much in general, as allocations are usually scarse during gameplay. I could still see improvements for loading times, and less stalling as well.
Have you looked at the Sebastian's heap improvements patches in the staging tree? According to Sebastian's and Michael's testing "The new heap allocator uses (inspired by the way how it works on Windows) various fixed-size free lists, and a tree data structure for large elements. With this implementation, I get up to [b]60%[/b] improvement for apps with the "bad allocation pattern", and up to [b]15%[/b] improvement in the "good case"."