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:
Nov. 24, 2015
Filed:
Oct. 31, 2012
Hitachi, Ltd., Tokyo, JP;
Makio Mizuno, Sagamihara, JP;
HITACHI, LTD., Tokyo, JP;
Abstract
According to the prior art, when requesters having different I/O access processing abilities compete when accessing a target, latency is extended via accesses from a requester having a lower I/O access performance, according to which the number of I/Os issued per unit time (data processing quantity) cannot be increased, and the processing performance of the system cannot be improved. According to the present invention, when requesters compete in accessing a target, the request having a lower requester performance (having a longer processing time per single I/O) is processed (started) in a prioritized manner. Thereby, the number of I/O processes per unit time can be increased, and the processing performance of the whole storage system can be improved.