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<p>Spinning, or busy waiting, is commonly employed in parallel processors when threads ofexecution must wait for some event, such as synchronization with another thread.Because spinning is purely overhead, it is detrimental to both user response time and system throughput. The effects of two environmental factors, multiprogramming and data-dependent execution times, on spinning are discussed, and it is shown how the choice of scheduling discipline can be used to reduce the amount of spinning in each case.</p>
Index Termsspinning; scheduling discipline; spin overhead; shared memory parallel systems; busywaiting; parallel processors; multiprogramming; data-dependent execution; memoryarchitecture; parallel machines; performance evaluation; scheduling

E. Lazowska, J. Zahorjan and D. Eager, "The Effect of Scheduling Discipline on Spin Overhead in Shared Memory Parallel Systems," in IEEE Transactions on Parallel & Distributed Systems, vol. 2, no. , pp. 180-198, 1991.
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