METHOD AND APPARATUS FOR MITIGATING EFFECTS OF MEMORY SCRUB OPERATIONS ON IDLE TIME POWER SAVINGS MODE

摘要

An approach for saving power in a memory subsystem that uses memory access idle timer to enable low power mode and memory scrub operation within computing system has been provided. The computing system determines that a memory subsystem is switched out of low power operation mode due to a memory scrub operation. In addition, the computing system bypasses the low power operation mode of an idle timer of the memory subsystem such that the memory subsystem is returned to the low power operation mode upon completion of the memory scrub operation. The computing system further sets a scrub flag of the memory subsystem to a high state, and clears the scrub flag to a low state to track if the idle timer should be bypassed.

主权项

1. A method for saving power in a memory subsystem that uses memory access idle timer to enable low power mode and memory scrub operation of a memory scrub engine within the memory subsystem of a computing system, the method comprising the steps of:
a computing system determining that a memory subsystem is switched out of low power mode due to a memory scrub operation; and in response to the said determining step, the computing system bypassing an idle timer of the memory subsystem such that the memory subsystem is returned to the low power mode upon completion of the memory scrub operation.