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:
Jan. 26, 2016
Filed:
Aug. 28, 2009
Richard West, Easton, MA (US);
Puneet Zaroo, Santa Clara, CA (US);
Carl A. Waldspurger, Palo Alto, CA (US);
Xiao Zhang, Rochester, NY (US);
Richard West, Easton, MA (US);
Puneet Zaroo, Santa Clara, CA (US);
Carl A. Waldspurger, Palo Alto, CA (US);
Xiao Zhang, Rochester, NY (US);
VMware, Inc., Palo Alto, CA (US);
Abstract
A thread (or other resource consumer) is compensated for contention for system resources in a computer system having at least one processor core, a last level cache (LLC), and a main memory. In one embodiment, at each descheduling event of the thread following an execution interval, an effective CPU time is determined. The execution interval is a period of time during which the thread is being executed on the central processing unit (CPU) between scheduling events. The effective CPU time is a portion of the execution interval that excludes delays caused by contention for microarchitectural resources, such as time spent repopulating lines from the LLC that were evicted by other threads. The thread may be compensated for microarchitectural contention by increasing its scheduling priority based on the effective CPU time.