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:
Apr. 14, 2015
Filed:
Jun. 30, 2011
Ari Juels, Brookline, MA (US);
Alina M. Oprea, Arlington, MA (US);
Michael Kendrick Reiter, Chapel Hill, NC (US);
Yinqian Zhang, Chapel Hill, NC (US);
Ari Juels, Brookline, MA (US);
Alina M. Oprea, Arlington, MA (US);
Michael Kendrick Reiter, Chapel Hill, NC (US);
Yinqian Zhang, Chapel Hill, NC (US);
EMC Corporation, Hopkinton, MA (US);
Abstract
At least one virtual machine implemented on a given physical machine in an information processing system is able to detect the presence of one or more other virtual machines that are also co-resident on that same physical machine. More particularly, at least one virtual machine is configured to avoid usage of a selected portion of a memory resource of the physical machine for a period of time, and to monitor the selected portion of the memory resource for activity during the period of time. Detection of a sufficient level of such activity indicates that the physical machine is also being shared by at least one other virtual machine. The memory resource of the physical machine may comprise, for example, a cache memory, and the selected portion of the memory resource may comprise one or more randomly selected sets of the cache memory.