Work balancing scheduler for processor cores and methods thereof
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United States of America Patent
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Jul 10, 2012
Grant Date -
Apr 29, 2010
app pub date -
Oct 23, 2008
filing date -
Oct 23, 2008
priority date (Note) -
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Abstract
A data processing device assigns tasks to processor cores in a more distributed fashion. In one embodiment, the data processing device can schedule tasks for execution amongst the processor cores in a pseudo-random fashion. In another embodiment, the processor core can schedule tasks for execution amongst the processor cores based on the relative amount of historical utilization of each processor core. In either case, the effects of bias temperature instability (BTI) resulting from task execution are distributed among the processor cores in a more equal fashion than if tasks are scheduled according to a fixed order. Accordingly, the useful lifetime of the processor unit can be extended.
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