Scheduling of background scrub commands to reduce high...

Details Scheduling of background scrub commands to reduce high... Scheduling of background scrub commands to reduce high...

2011-02-01

2011-02-01

Ellis, Kevin L (Department: 2187)

Electrical computers and digital processing systems: memory

Storage accessing and control

Access timing

C714S042000, C714S718000

Reexamination Certificate

active

07882323

ABSTRACT:
A method and apparatus to scrub a memory during a scrub period, of a computer system. The computer system has a memory controller that receives read requests and write requests from a processor. The memory controller provides a different priority for scrub requests versus read requests during a period of relatively light memory workload versus a period of relatively heavy workload. The memory controller provides a relatively higher priority for scrub requests near an end of a scrub period if scrub progress is behind an expected scrub progress.

REFERENCES:
patent: 5632012 (1997-05-01), Belsan et al.
patent: 7137038 (2006-11-01), New et al.
patent: 2001/0047497 (2001-11-01), Larson et al.
patent: 2005/0273646 (2005-12-01), Hillier et al.
patent: 2006/0062048 (2006-03-01), Gonzalez et al.

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