Abstract

Operating systems must provide functionality that closely resembles that of a data management system, but existing query mechanisms are ad-hoc and idiosyncratic. To address this problem, we argue for the adoption of a relational interface to the operating system kernel. While prior work has made similar proposals, our approach is unique in that it allows for incremental adoption over an existing, production-ready operating system. In this paper, we present progress on a prototype system called OSDB that embodies the incremental approach and discuss key aspects of the design, including the data model and concurrency control mechanisms. We present four example use cases: a network usage monitor, a load balancer, file system checker, and network debugging session, as well as experiments that demonstrate the low overhead for our approach.