System interconnect dynamic scaling by predicting I/O requirements
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United States of America Patent
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Apr 26, 2016
Grant Date -
Jul 9, 2015
app pub date -
Jan 6, 2014
filing date -
Jan 6, 2014
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Abstract
Interface management techniques provide reduced power consumption along with reducing heat and EMI generation in a computer system having multiple interconnected processing units. Physical link layers of external interfaces that interconnect the processing units of have dynamically adjustable bandwidth and the bandwidths are dynamically adjusted by predicting interface bandwidth requirements. An interface controller detects events other than I/O requests that occur in a processing unit that are indicators of potential future transactions on one of the external interfaces connected to the processing unit. The interface controller predicts, from the detected events, that future transactions will likely occur on the interface, and in response, controls the dynamically adjustable bandwidth of physical link layer of the interface to accommodate the future transactions.
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