Method and apparatus for conserving power by throttling...

Details Method and apparatus for conserving power by throttling... Method and apparatus for conserving power by throttling...

2007-04-10

2009-12-01

Coleman, Eric (Department: 2183)

Electrical computers and digital processing systems: processing

Processing control

C712S205000

Reexamination Certificate

active

07627742

ABSTRACT:
An information handling system includes a processor that throttles the instruction fetcher whenever the inaccuracy, or lack of confidence, in branch predictions for branch instructions stored in a branch instruction queue exceeds a predetermined threshold confidence level of inaccuracy or error. In this manner, fetch operations slow down to conserve processor power when it is likely that the processor will mispredict the outcome of branch instructions. Fetch operations return to full speed when it is likely that the processor will correctly predict the outcome of branch instructions.

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