Sap Se

Randall Hammon

Mihnea Andrei

Colin Florendo

Robert Schulze

Yanhong Wang

Simhachala Sasikanth Gottapu

Sarika Iyer

Adrian Dragusanu

Anup Ghatage

Disclosed herein are system, method, and computer program product embodiments for performing fair prefetching. An embodiment operates by splitting a data vector into a first subrange and a second subrange. The embodiment performs a first chance prefetch operation on the first subrange based on a fixed number of pages, thereby loading a set of pages of the first subrange into a main memory. The embodiment performs the first chance prefetch operation on the second subrange based on the fixed number of pages, thereby loading a first set of pages of the second subrange into the main memory. The embodiment performs a second chance prefetch operation on the second subrange based on the performing the first chance prefetch operation on the second subrange, thereby loading a second set of pages of the second subrange into the main memory. The embodiment then executes the query.

Fair prefetching in hybrid column stores

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Walnut Creek, CA, United States of America

Randall Hammon