The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 10, 2012
Filed:
Aug. 12, 2009
Jayanta Basak, New Delhi, IN;
Pradip Bose, Yorktown Heights, NY (US);
Alper Buyuktosunoglu, White Plains, NY (US);
Anita Lungu, Durham, NC (US);
Jayanta Basak, New Delhi, IN;
Pradip Bose, Yorktown Heights, NY (US);
Alper Buyuktosunoglu, White Plains, NY (US);
Anita Lungu, Durham, NC (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A mechanism is provided for two-level guarded predictive power gating of a set of units within the data processing system. A success determines whether a unit within the set of units is power gated during a monitoring interval. If the unit is power gated, the success monitor determines whether a count of idle cycles for the unit is below a breakeven point. If the count is above the breakeven point, the success monitor increments a success efficiency counter. If the count is below the breakeven point, the success monitor determines whether the unit needs to be woke up. If the unit needs to be woke up, the success monitor increments a harmful efficiency counter. If the value of the harmful efficiency counter is less than the value from the success efficiency counter, the success monitor enables power gating for the unit via a first-level power-gating mechanism.