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dc.contributor.advisorAnant Agarwal
dc.contributor.authorWentzlaff, Daviden_US
dc.contributor.authorGruenwald, Charles, IIIen_US
dc.contributor.authorBeckmann, Nathanen_US
dc.contributor.authorBelay, Adamen_US
dc.contributor.authorKasture, Harshaden_US
dc.contributor.authorModzelewski, Kevinen_US
dc.contributor.authorYouseff, Lamiaen_US
dc.contributor.authorMiller, Jason E.en_US
dc.contributor.authorAgarwal, Ananten_US
dc.contributor.otherComputer Architectureen
dc.date.accessioned2011-03-09T18:45:21Z
dc.date.available2011-03-09T18:45:21Z
dc.date.issued2011-03-09
dc.identifier.urihttp://hdl.handle.net/1721.1/61640
dc.description.abstractCurrent monolithic operating systems are designed for uniprocessor systems, and their architecture reflects this. The rise of multicore and cloud computing is drastically changing the tradeoffs in operating system design. The culture of scarce computational resources is being replaced with one of abundant cores, where spatial layout of processes supplants time multiplexing as the primary scheduling concern. Efforts to parallelize monolithic kernels have been difficult and only marginally successful, and new approaches are needed. This paper presents fleets, a novel way of constructing scalable OS services. With fleets, traditional OS services are factored out of the kernel and moved into user space, where they are further parallelized into a distributed set of concurrent, message-passing servers. We evaluate fleets within fos, a new factored operating system designed from the ground up with scalability as the first-order design constraint. This paper details the main design principles of fleets, and how the system architecture of fos enables their construction. We describe the design and implementation of three critical fleets (network stack, page allocation, and file system) and compare with Linux. These comparisons show that fos achieves superior performance and has better scalability than Linux for large multicores; at 32 cores, fos's page allocator performs 4.5 times better than Linux, and fos's network stack performs 2.5 times better. Additionally, we demonstrate how fleets can adapt to changing resource demand, and the importance of spatial scheduling for good performance in multicores.en_US
dc.format.extent13 p.en_US
dc.relation.ispartofseriesMIT-CSAIL-TR-2011-012
dc.subjectmulticoreen_US
dc.subjectscalable operating systemen_US
dc.titleFleets: Scalable Services in a Factored Operating Systemen_US


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