PROCESSOR CORE POWER MANAGEMENT TAKING INTO ACCOUNT THREAD LOCK CONTENTION

A method maintains, for each processing element in a processor, a count of threads waiting in a data structure for hand-off locks in order to execute on the processing element. The method maintains the processing element in a first power state if the count of threads waiting for hand-off locks is gr...

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Bibliographische Detailangaben
Hauptverfasser:	OLSZEWSKI BRET R, VAIDYANATHAN BASU
Format:	Patent
Sprache:	eng
Schlagworte:	CALCULATING CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION ANDCOMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION ANDCOMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THIR OWNENERGY USE COMPUTING COUNTING ELECTRIC DIGITAL DATA PROCESSING GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS PHYSICS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE
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Beschreibung
Zusammenfassung:	A method maintains, for each processing element in a processor, a count of threads waiting in a data structure for hand-off locks in order to execute on the processing element. The method maintains the processing element in a first power state if the count of threads waiting for hand-off locks is greater than zero. The method puts the processing element in a second power state if the count of threads waiting for hand-off locks is equal to zero and no thread is ready to be processed by the processing element. The method returns the processing element to the first power state if the count of threads becomes greater than zero, or if a thread becomes ready to be processed by the processing element.