Method for reducing disk I/O accesses in a multi-processor clust

Details Method for reducing disk I/O accesses in a multi-processor clust Method for reducing disk I/O accesses in a multi-processor clust

1991-07-19

1993-08-24

Kulik, Paul V.

Boots, shoes, and leggings

395800, 364DIG1, 364229, 3642381, 364243, 3642431, 3642432, 3642435, 364246, 364254, 3642543, 3642563, G06F 1314, G06F 1208

Patent

active

052396436

ABSTRACT:
A method for minimizing I/O mechanical assess operations on secondary storage devices in a data processing system having a plurality of processor units interconnected in a cluster configuration to permit each processor unit to request and obtain data that is resident only on a secondary storage device of one processor unit. The method involves the steps of maintaining at each processor unit information about each copy of data that has been sent from the unit to another unit to permit a second request to the unit to be serviced by transferring a copy of the data from the main memory which is storing the data to the requesting unit rather than servicing the request with a relatively slow I/O accessing operation to a secondary storage device.

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