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. 27, 1999
Filed:
Aug. 18, 1995
Michael Joseph Corrigan, Rochester, MN (US);
Sheldon Bernard Levenstein, Rochester, MN (US);
Terrence James Stewart, Rochester, MN (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
It is known that virtual memory segments that are allocated together tend to be used together. With existing sequential address allocation mechanisms, this in turn means that programs tend to end up using the same set or sets of virtual segment addresses (i.e., in the same minitable or minitables), which, as mentioned, leads to increased address translation time because of clumping. The address allocation mechanism of the present invention reduces clumping by allocating virtual segment addresses in a pseudo-random order. This decreases the likelihood that virtual segment addresses that are allocated together end up in the same set or sets of virtual segment addresses within the address translation table.