Achieving low grace period latencies despite energy efficiency
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United States of America Patent
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Jul 12, 2016
Grant Date -
Jun 4, 2015
app pub date -
Dec 3, 2013
filing date -
Dec 3, 2013
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Abstract
A technique for achieving low grace-period latencies in an energy efficient environment in which processors with Read-Copy Update (RCU) callbacks are allowed to enter low power states. In an example embodiment, for each processor that has RCU callbacks, different grace period numbers are assigned to different groups of the processor's RCU callbacks. New grace periods are periodically started and old grace periods are periodically ended. As old grace periods end, groups of RCU callbacks having corresponding assigned grace period numbers are invoked.
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