Michael Edward Mccracken

US Patent:

20140089572, Mar 27, 2014

Filed:

Sep 24, 2012

Appl. No.:

13/625502

Inventors:

- Redwood Shores CA, US
David A. Munday - Santa Cruz CA, US
Michael O. McCracken - San Diego CA, US

Assignee:

ORACLE INTERNATIONAL CORPORATION - Redwood Shores CA

International Classification:

G06F 12/08

US Classification:

711105, 711147, 711E12017, 711E12023

Abstract:

The disclosed embodiments provide a system that performs distributed page-table lookups in a shared-memory multiprocessor system with two or more nodes, where each of these nodes includes a directory controller that manages a distinct portion of the system's address space. During operation, a first node receives a request for a page-table entry that is located at a physical address that is managed by the first node. The first node accesses its directory controller to retrieve the page-table entry, and then uses the page-table entry to calculate the physical address for a subsequent page-table entry. The first node determines the home node (e.g., the managing node) for this calculated physical address, and sends a request for the subsequent page-table entry to that home node.