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:
Feb. 25, 2020
Filed:
Apr. 21, 2017
Applicant:
Vmware, Inc., Palo Alto, CA (US);
Inventors:
Haoqiang Zheng, Mountain View, CA (US);
Carl A. Waldspurger, Palo Alto, CA (US);
Assignee:
VMware, Inc., Palo Alto, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 9/48 (2006.01); G06F 9/455 (2018.01); G06F 9/52 (2006.01); G06F 9/46 (2006.01);
U.S. Cl.
CPC ...
G06F 9/45533 (2013.01); G06F 9/45545 (2013.01); G06F 9/45558 (2013.01); G06F 9/46 (2013.01); G06F 9/485 (2013.01); G06F 9/4881 (2013.01); G06F 9/522 (2013.01); G06F 2009/4557 (2013.01); G06F 2009/45575 (2013.01);
Abstract
Techniques for implicit coscheduling of CPUs to improve corun performance of scheduled contexts are described. One technique minimizes skew by implementing corun migrations, and another technique minimizes skew by implementing a corun bonus mechanism. Skew between schedulable contexts may be calculated based on guest progress, where guest progress represents time spent executing guest operating system and guest application code. A non-linear skew catch-up algorithm is described that adjusts the progress of a context when the progress falls far behind its sibling contexts.