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.

Date of Patent:
Aug. 15, 2017

Filed:

Mar. 03, 2015
Applicant:

Fujitsu Limited, Kawasaki-shi, Kanagawa, JP;

Inventors:

Takuro Kumabe, Kawasaki, JP;

Akihito Kobayashi, Kawasaki, JP;

Motohiro Sakai, Nerima, JP;

Shinichiro Matsumura, Kawasaki, JP;

Takahiro Ohyama, Kawasaki, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 12/122 (2016.01); G06F 12/084 (2016.01); G06F 12/0817 (2016.01);
U.S. Cl.
CPC ...
G06F 12/122 (2013.01); G06F 12/084 (2013.01); G06F 12/0822 (2013.01); G06F 2212/314 (2013.01); G06F 2212/69 (2013.01);
Abstract

A control unit stores data used in a process to a shared cache memory. The control unit provides a shared queue in a memory space of the shared cache memory and performs LRU control with the use of the shared queue. The control unit also provides a local queue in the memory space of the shared cache memory. The control unit enqueues a CBE (management information) for a cache page used by a core in a process to the local queue. The control unit dequeues a plurality of CBEs from the local queue upon satisfaction of a predetermined condition, and enqueues the dequeued CBEs to the shared queue.


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