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:
Jul. 19, 2016
Filed:
Nov. 17, 2011
Yimin Deng, Redmond, WA (US);
Ho Yuen Chau, Redmond, WA (US);
Yue Zuo, Redmond, WA (US);
Forrest Curtis Foltz, Woodinville, WA (US);
Yimin Deng, Redmond, WA (US);
Ho Yuen Chau, Redmond, WA (US);
Yue Zuo, Redmond, WA (US);
Forrest Curtis Foltz, Woodinville, WA (US);
MIROSOFT TECHNOLOGY LICENSING, LLC, Redmond, WA (US);
Abstract
Computerized methods, systems, and computer-storage media for throttling requests from virtual machines (VMs) to a hard-disk drive (HDD) are provided. When a request for disk I/O is received from a VM, a disk-drive model that simulates performance characteristics of the HDD is accessed. During access, the disk-drive model's estimation of HDD parameters and the disk-drive model's estimation of a current state of a disk head of the HDD are gathered. A projected execution time to carry out the request is computed as a function of the estimated HDD parameters and the estimated current state of the disk head. Also, an actual execution time to carry out the request is measured upon allowing the request to pass to the HDD. Using a comparison of the projected execution time and the actual execution time, the traffic of the requests from the VMs is throttled.