Electrical computers and digital processing systems: virtual mac – Task management or control – Process scheduling
Reexamination Certificate
2007-07-31
2007-07-31
An, Meng-Al T. (Department: 2195)
Electrical computers and digital processing systems: virtual mac
Task management or control
Process scheduling
C718S001000, C718S102000, C719S312000
Reexamination Certificate
active
10425469
ABSTRACT:
A system, computer program product and method for dispatching work items in a virtual machine operating system. The virtual machine operating system defines first and second virtual machines. First and second work queues are created in a memory. The first virtual machine assigns a first work item to the first work queue and a second work item to the second work queue. The first virtual machine schedules work items from the first work queue for execution by the first virtual machine. The first and second work items originate from the first virtual machine. The first and second work queues are directly accessible by the first virtual machine. The second virtual machine assigns a third work item to the first work queue and a fourth work item to the second work queue. The second virtual machine schedules work items from the second work queue for execution by the second virtual machine. The third and fourth work items originate from the second virtual machine. The first and second work queues are directly accessible by the second virtual machine. The first virtual machine is not able to schedule work items from the second work queue, and the second virtual machine is not able to schedule work items from the first work queue. A shared work queue in shared memory is also disclosed.
REFERENCES:
patent: 4682284 (1987-07-01), Schrofer
patent: 5592625 (1997-01-01), Sandberg
patent: 5692192 (1997-11-01), Sudo
patent: 5884077 (1999-03-01), Suzuki
patent: 6003066 (1999-12-01), Ryan et al.
patent: 6081833 (2000-06-01), Okamoto
patent: 6148378 (2000-11-01), Bordaz
patent: 6170045 (2001-01-01), Bobak et al.
patent: 6205528 (2001-03-01), Kingsbury
patent: 6272516 (2001-08-01), Angle et al.
patent: 6389482 (2002-05-01), Bobak et al.
patent: 6438663 (2002-08-01), Agarwal et al.
patent: 6477560 (2002-11-01), Murayama et al.
patent: 6938253 (2005-08-01), Kim
patent: 2003/0037178 (2003-02-01), Vessey et al.
patent: 2112055 (1990-04-01), None
patent: PUPA 05-233562 (1993-09-01), None
patent: 09-319653 (1997-12-01), None
patent: PUPA 2000-215071 (2000-08-01), None
patent: WO 00/73902 (2000-07-01), None
IBM TDB vol. 37 No. 06A Jun. 1994 “Shared Memory Cluster—A Scalable Multiprocessor Design” pp. 503-507 IBM TDB vol. 35 No. 18 Jun. 1992 “Logically Shared Memory” pp. 44-49.
U.S. Appl. No. 10/280,987 entitled “System and Method for Transferring Data Between Virtual Machines or Other Computer Entities” filed on Oct. 24, 2002 by Shultz and Tkatschow.
US Patent Application END9-2003-0011 entitled“Management of Virtual Machines to Utilize Shared Resources” by: C. Casey, S. Shultz & X. Tkatschow.
US Patent Application END9-2003-0019US1 entitled “Management of Locks in a Virtual Machine Environment” by: M. J. Donovan, M.K. Howland, S.S. Shultz & X. Tkatschow.
zVM™ Built on IBM Virtualization Technology, General Information Version 4 Release 2.0.; www.vm.ibm.com/pubs/pdf/HCSF8A60.PDF.
Donovan Michael J.
Howland Melissa K.
Shultz Steven
Tkatschow Xenia
An Meng-Al T.
Samodovitz Arthur J.
Wai Eric C
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