Networking in next generation disaggregated datacenters

Nowadays, datacenters lean on a computer-centric approach based monolithic servers which include all necessary hardware resources (mainly CPU, RAM, network, and disks) to run applications. Such an architecture comes with two main limitations: (1) difficulty achieve full resource utilization (2) coarse granularity for maintenance. Recently, many works investigated resource-centric called disaggregated where the datacenter is composed of self-content boards interconnected using fast interconnection technologies, each board including instances one type. The allows be managed (maintenance, allocation) independently. LegoOS first work studied implications disaggregation operating system, proposing disaggregate system itself. They demonstrated suitability this approach, considering mainly CPU RAM resources. However, they did not study implication network We reproduced infrastructure extended it support networking. show that networking can following same principles, classical optimizations such as DMA, DDIO, or loopback in environment. Our evaluations viability potential future infrastructures.