YACKOS on a shared-memory multiprocessor

Authors:
Raphael Finkel;Debra Hengsen
Affiliations:
University of Kentucky, Lexington, KY;University of Kentucky, Lexington, KY
Venue:
ACM SIGARCH Computer Architecture News - Special Issue: Architectural Support for Operating Systems
Year:
1988

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Abstract

Yackos(yet another communication-kernel operating system)is designed for high speed, low latency inter-process communication. Speed is obtained by avoiding context switches and presenting to processes a low-level interface. Processes avoid context switches when passing messages by sharing data with the kernel. Yackos message passing was first implemented above Unix on Sequent shared-memory multiprocessors where round-trip messages can be passed in under 200 microseconds. It was then ported to both Sun and Vax workstations.