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:
Apr. 25, 2006
Filed:
Jul. 28, 2003
Isamu Kurokawa, Odawara, JP;
Hiroaki Nakanishi, Odawara, JP;
Junichi Muto, Odawara, JP;
Hisaharu Takeuchi, Odawara, JP;
Masahiro Kawaguchi, Odawara, JP;
Isamu Kurokawa, Odawara, JP;
Hiroaki Nakanishi, Odawara, JP;
Junichi Muto, Odawara, JP;
Hisaharu Takeuchi, Odawara, JP;
Masahiro Kawaguchi, Odawara, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A data look-ahead control is provided to realize a high cache hit rate and improves responsiveness in an information processing system. In the data look-ahead control, when it is determined that the current input/output request is an access to a specific database that was the subject of a recent input/output request and whose I/O count exceeds a predetermined value, and it is also determined that a cache memory can be occupied to some extent and that there would be no impact on other input/output requests, data including one or more blocks (logical tracks) larger than a block that is the subject of the current I/O request are loaded to the cache memory.