Method and apparatus for parallel updates to global state in...

Details Method and apparatus for parallel updates to global state in... Method and apparatus for parallel updates to global state in...

2006-01-24

2010-11-16

Robinson, Greta L (Department: 2169)

Data processing: database and file management or data structures

Data integrity

Concurrent read/write management using locks

C707S610000, C707S652000, C707S966000, C709S203000, C709S213000, C711S147000

Reexamination Certificate

active

07836033

ABSTRACT:
A method and apparatus for synchronizing updates to a large set of global counters are described. In one embodiment, the method includes making updates to a global state in response to a file system making changes to data in memory. In parallel, updates are made to a copy of the global state in a temporary buffer in response to the file system flushing the data changes to a mass storage device. The temporary buffer thus includes a set of deltas representing the changes to be made to the global state in response to the changed data in memory being pushed to the mass storage device. The method further includes merging the deltas in the temporary buffer with the global state.

REFERENCES:
patent: 4412285 (1983-10-01), Neches et al.
patent: 5584023 (1996-12-01), Hsu
patent: 6446141 (2002-09-01), Nolan et al.
patent: 7206805 (2007-04-01), McLaughlin, Jr.
patent: 2003/0079155 (2003-04-01), Kingsbury

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