Bug #2489
Updated by jorisgio almost 10 years ago
Recently x86-64's default C library allocator was switched back to nmalloc from dmalloc for fragmentation concerns exposed by xulrunner. nmalloc doesn't cache address space in userland for buffers larger than 8KB, which mean hitting mmap allocations for any of those requests. Some limited form of VA caching should improve performance in general and mitigate some-to-all of the performance hit going back from dmalloc to nmalloc. -- vs;