John C Nagy

US Patent:

6625638, Sep 23, 2003

Filed:

Apr 30, 1998

Appl. No.:

09/070465

Inventors:

Jeffrey Paul Kubala - Poughquag NY
John Charles Nagy - Saugerties NY
Jeffrey Mark Nick - Fishkill NY
Ira Glenn Siegel - New Paltz NY

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 950

US Classification:

709105, 711173

Abstract:

A logical partition includes at least one dedicated logical processor and at least one shared logical processor. The dedicated processor is a different type of processor than the shared processor, and/or the dedicated processor executes a different dispatching procedure than the shared processor. The use of the shared processor automatically ramps up, as the arrival rate of requests forwarded to the logical partition increases. Furthermore, the use of, the shared processor automatically ramps down, as the arrival rate decreases.

US Patent:

6704766, Mar 9, 2004

Filed:

Sep 10, 1997

Appl. No.:

08/927222

Inventors:

Steven N. Goss - Kingston NY
Gary M. King - Millbrook NY
Jeffrey P. Kubala - Poughquag NY
John C. Nagy - Saugerties NY
David H. Surman - Milton NY
Wendell W. Wilkinson - Hyde Park NY

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 900

US Classification:

709104, 709226, 709229

Abstract:

A method and apparatus for dynamically controlling the dispatching of a coupling facility operating in a logical partition sharing a processor resource with one or more other logical partitions issuing requests to the coupling facility. A plurality of coupling facility dispatching modes differing in their relative dispatch duration are defined. One dispatching mode is initially selected, and the number of requests received from the other logical partitions within a predetermined interval while in a selected dispatching mode is determined. Transitions between the defined dispatching modes are made in accordance with the number of requests received within the sampling interval in the selected dispatching mode. The method and apparatus are especially suitable for controlling the dispatching of a backup coupling facility, whose polling loop would otherwise consume processor resources usable by other logical.

US Patent:

20180095811, Apr 5, 2018

Filed:

Sep 30, 2016

Appl. No.:

15/282763

Inventors:

- Armonk NY, US
Peter D. Driever - Poughkeepsie NY, US
Steven N. Goss - Poughkeepsie NY, US
Georgette L. Kurdt - Wappingers Falls NY, US
John Nagy - Ulster Park NY, US
David H. Surman - Milton NY, US

International Classification:

G06F 11/00

Abstract:

A computing system is configured to maintain equivalency of independent structures located in different coupling facilities. The computing system includes a first coupling facility and a second coupling facility different from the first coupling facility. The first coupling facility includes a first structure that receives a first data modification based on a modification command requested by an application executed by an operating system. The second coupling facility in signal communication with the first coupling facility and includes a secondary structure that receives a second data modification based on the first data modification applied to the first structure. The first coupling facility outputs a Push List Structure Object (PLSO) command data block to the second coupling facility. The PLSO command data block indicates the first data modification applied to the first structure.