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:
Oct. 30, 2012
Filed:
Jun. 16, 2005
Rong Yu, Franklin, MA (US);
Peng Yin, South Grafton, MA (US);
Stephen R. Ives, West Boylston, MA (US);
Adi Ofer, Framingham, MA (US);
Gilad Sade, Newton, MA (US);
Barak Bejerano, Natick, MA (US);
Rong Yu, Franklin, MA (US);
Peng Yin, South Grafton, MA (US);
Stephen R. Ives, West Boylston, MA (US);
Adi Ofer, Framingham, MA (US);
Gilad Sade, Newton, MA (US);
Barak Bejerano, Natick, MA (US);
EMC Corporation, Hopkinton, MA (US);
Abstract
Scheduling jobs for a plurality of devices includes assigning a run count value to each of the devices, scheduling a number of consecutive jobs up to the run count value, and decrementing the run count value according to the number of consecutive jobs scheduled. The run count value for a particular one of the devices may vary according to a total load of the particular one of the devices. The total load of the particular device may vary according to a number of pending jobs for the particular device and a total number of jobs for all devices coupled to a controller for the devices. The devices may be disk drive devices. Only one read job may be scheduled for a device irrespective of the run count value for the device and devices having pending read jobs may be given precedence over other devices. Multiple read jobs may be scheduled for a device according to the run count value and devices having pending read jobs may be given precedence over other devices. The disk drive devices may be subdivided into a plurality of logical devices.