System and method for warm shutdown and restart of a buffer...

Details System and method for warm shutdown and restart of a buffer... System and method for warm shutdown and restart of a buffer...

G - Physics

06

F

G06F 12/02 (2006.01) G06F 13/38 (2006.01) G06F 17/00 (2006.01) G06F 17/30 (2006.01) G11C 7/10 (2006.01)

Patent

CA 2433254

A system and method for warm shutdown and restart of a buffer pool is provided. The buffer content including pages and control structures associated with these pages is partitioned into blocks and each block is saved to disk as a sequential file. The size of each block may be selected to provide the optimal I/O (input/output) efficiency during buffer pool shutdown and restart operations. Blocks can be saved simultaneously using a number of writer threads. During restart of the buffer pool, the control information is read from the disk and restored to the buffer pool using reader threads. The buffer pool may be made available for references to pages while reader threads are enabled to read the saved information by blocks to facilitate a more rapid restoration of information in the buffer pool. Allocation of portions of the buffer pool for restoring pages may be performed while the buffer pool is available for references to hasten availability.

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