If you really do have a container per process, I'd suggest you check out OSv from Cloudius Systems. If a single address space is all you need and you're the onl

If you really do have a container per process, I'd suggest you check out OSv from Cloudius Systems. If a single address space is all you need and you're the only process using the network space, you can make a lot of optimizations and assumptions that aren't being made in a Docker instance. They were able to get better performance running memcached inside OSv inside KVM on Linux on bare metal, then they did running memcached in Linux on bare metal.