International Business Machines Corporation

Swetha N Rao

Keerthi B Kumar

Manjunath B Subramanian

A method for transferring memory pages to a first and a second page repository identifies pages in a memory sharing operation for transfer to a first page repository and pages in a memory migration operation for transfer to a second page repository. Pages in the memory migration operation may be prepared for transfer prior to transfer of the pages in the memory sharing operation. Transferring pages in the migration operation may remove the need to transfer pages in the memory sharing operation.

Prioritizing pages to transfer for memory sharing

A method for transferring pages from a memory to a page repository identifies an affinity domain that associates processors and memory pages. The method further includes determining that a processor in an affinity domain is suspended and selecting pages included in that affinity domain to transfer prior to transferring pages in an affinity domain in which no processors are suspended.

Prioritizing memory pages to copy for memory migration

In a method for managing memory pages, responsive to determining that a server is experiencing memory pressure, one or more processors identifying a first memory page in a listing of memory pages in the server. The method further includes determining whether the first memory page corresponds to a logical partition (LPAR) of the server that is scheduled to undergo an operation to migrate data stored on memory pages of the LPAR to another server. The method further includes, responsive to determining that the first memory page does correspond to a LPAR of the server that is scheduled to undergo an operation to migrate data, determining whether to evict the first memory page based on a memory page state associated with the first memory page. The method further includes, responsive to determining to evict the first memory page, evicting data stored in the first memory page to a paging space.

Management of memory pages

A method, a system and a computer program of synchronizing data between a data management system and an external system are disclosed. The method includes creating a first database instance and a second database instance using an integration data model. The method further includes synchronizing data between the second database instance and the external system. A services framework is created and the first database instance and the second database instance are interfaced using the services framework which includes an entity definition repository, a change tracking repository, and a data export element. Also disclosed are a system and a computer program for synchronizing data between a data management system and an external system.

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Bengaluru, India

Swetha N Rao