System and method for tracking dirty memory

Details System and method for tracking dirty memory System and method for tracking dirty memory

1999-03-22

2000-04-04

Wright, Norman Michael

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

711156, 714 5, G06F 1100, G06F 1300

Patent

active

060473924

ABSTRACT:
A system and method for tracking dirty memory which, in one embodiment, comprises a first memory corresponding to a first processor, a second memory corresponding to a second processor and a third memory coupled to the first memory, wherein the third memory stores bits corresponding to the pages of the first memory, and wherein each bit is set to "dirty" when the first processor writes to the corresponding page of the first memory and is set to "clean" when the corresponding page of the first memory is copied to a corresponding page of the second memory. The system and method can be used in a computer having multiple cpusets to assist in cpuset re-integration by copying the contents of one cpuset's memory to another cpuset's memory while the operating system of the computer continues to run.

REFERENCES:
patent: 3800294 (1974-03-01), Lawlor
patent: 4634110 (1987-01-01), Julich et al.
patent: 4700292 (1987-10-01), Campanini
patent: 4757442 (1988-07-01), Sakata
patent: 4891810 (1990-01-01), De Corlieu et al.
patent: 5119485 (1992-06-01), Ledbetter, Jr. et al.
patent: 5136595 (1992-08-01), Kimura
patent: 5155824 (1992-10-01), Edenfield et al.
patent: 5226152 (1993-07-01), Klug et al.
patent: 5271023 (1993-12-01), Norman
patent: 5287512 (1994-02-01), Ellis
patent: 5428761 (1995-06-01), Herlihy et al.
patent: 5473753 (1995-12-01), Wells et al.
patent: 5574849 (1996-11-01), Sonnier et al.
patent: 5623633 (1997-04-01), Zeller et al.
patent: 5644701 (1997-07-01), Takewaki
patent: 5675807 (1997-10-01), Iswandhi et al.
patent: 5751932 (1998-05-01), Horst et al.
patent: 5751995 (1998-05-01), Sonnier et al.
patent: 5790776 (1998-08-01), Sonnier et al.
patent: 5838894 (1998-11-01), Horst
patent: 5935742 (1999-08-01), Williams
"Asynchronous Dirty Status During Background Directory Flush," Author Anonymous, Research Disclosure, p. 64, Jan. 1990.
Williams, Tom "New Approach Allows Painless Move to Fault Tolerance." Computer Design 31 (5):51-53 (1992).
Yano, Yoichi et al., "V60/V70 Microprocessor and its Systems Support Functions," Spring CompCon 88 --33rd IEEE Computer Soc. Intl. Conf., pp. 36-42 (1988).

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