The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 27, 2004
Filed:
Mar. 13, 2000
Prashanth Balakrishna Bhat, Foster City, CA (US);
Kenneth M. Wilson, San Jose, CA (US);
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
An apparatus for and a method of memory-affinity process scheduling in CC-NUMA systems. The system includes a plurality of nodes connected to a network. A plurality of processes are running on the various nodes of the system. The system further includes at least one memory-affinity counter for each executing process for each node of the system. Process scheduling begins by assigning processes to nodes. During execution, the memory-affinity counters are incremented on every memory access. At a process rescheduling interval, the memory-affinity counters are evaluated and rescheduling is performed based on a preselected policy. At a reset interval, the memory-affinity counters are adjusted to reduce the impact of older memory accesses. The resulting memory-affinity process scheduling is NUMA aware.