My comment isn't really targeted at LMDB specifically, it's more generally regarding mmap(). If you design the data format to work well on a spinning disk, it

My comment isn't really targeted at LMDB specifically, it's more generally regarding mmap(). If you design the data format to work well on a spinning disk, it should work well with an mmap based access. That's what my comment implies, and it's completely consistent with what you're saying regarding the benchmarks.