International Business Machines Corporation

Shouchun Li

Dwip N Banerjee

Omar Cardona

James Brian Cunningham

Jeffrey Paul Messing

Rashmi Narasimhan

A memory registration abstraction layer includes decision logic for dynamic, efficient determination of memory copy versus registration. The exemplary embodiments apply to direct memory access environments. The memory registration abstraction layer also includes tracking logic for monitoring the usage history for certain ranges of memory registration requests. The registration logic chooses to copy memory or map memory based on training and observation of application behavior, taking the more efficient performance path without requiring changes to the application.

Method for efficient determination of memory copy versus registration in direct access environments

A method, apparatus, and computer instructions for facilitating failover between network adapters. A failure of a first network adapter is detected in a device driver layer. In response to detecting the failure, the transmission of data is changed by the device driver layer to a second network adapter.

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Round Rock, TX, United States of America

Shouchun Li