I was thinking about doing something which would require allocating 1024 bytes plus an 8 byte header. It occurred to me this is practically the worst possible case for our current slab allocator -- it will round the 1032 byte allocation up to 2048 and we'll get two of them per page. If we had a slab that was 1344 bytes, we could get three objects like this per page, and they'd still be 64 byte aligned. Similarly, it might be worth adding slabs of size 576 (512 + header, get 7 per page) and 320 (256 + header, get 12 per page). Should be a fairly simple project for someone to undertake.
