The group behind Arrakis did some testing by bypassing the kernel through NIC's and the results were pretty amazing. They also made modifications to memcached a

The group behind Arrakis did some testing by bypassing the kernel through NIC's and the results were pretty amazing. They also made modifications to memcached and got similarly great results FWIW. https://www.usenix.org/system/files/conference/osdi14/osdi14-paper-peter_simon.pdf https://www.usenix.org/system/files/conference/osdi14/osdi14...