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Ugochukwu Njoku
Frank W Brice Jr, Janet R Easton, Charles W Gainey Jr, Jeffrey P Kubala, Hans Helge Lehmann, Tan Lu, Ugochukwu Njoku Charles, Kenneth J Oakes, Dale F Riedy Jr, Charles E Shapley, Gustav E Sittmann, Leslie W Wyman, Harry M Yudenfriend: Managing sets of input/output communications subadapters of an input/output subsystem. International Business Machines Corporation, Eugene I Shkurko Esq, Blanch E Schiller Esq, Heslin Rothenberg Farley & Mesiti P C, October 2, 2007: US07277968 (34 worldwide citation)

Input/output (I/O) communications subadapters, such as subchannels, of an I/O subsystem are dedicated to components, such as I/O devices, of the I/O subsystem. The subadapters provide information about the associated components, in response to the execution of I/O instructions. To enhance I/O connec ...


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Scott M Carlson, Greg A Dyck, Tan Lu, Kenneth J Oakes, Dale F Riedy Jr, William J Rooney, John S Trotter, Leslie W Wyman, Harry M Yudenfriend: Emulation of extended input/output measurement block facilities. International Business Machines Corporation, John E Campbell, October 6, 2009: US07600053 (72 worldwide citation)

An Extended Input/output (I/O) measurement block facility is emulated. The facility provides for the collection of relevant I/O measurement data, and the storing for later efficient retrieval of that data in an extended measurement block. The stored data relates to the performance of an I/O subchann ...


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Scott M Carlson, Greg A Dyck, Tan Lu, Kenneth J Oakes, Dale F Riedy Jr, William J Rooney, John S Trotter, Leslie W Wyman, Harry M Yudenfriend: Extended input/output measurement facilities. International Business Machines Corporation, John E Campbell, Heslin Rothenberg Farley & Mesiti, February 14, 2006: US07000036 (68 worldwide citation)

Input/output (I/O) measurement facilities are provided. An extended I/O measurement block facility is provided that enables measurement blocks to be stored in discontiguous areas of main storage and to be accessed directly via addresses. In a further aspect, an extended I/O measurement word facility ...


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Scott M Carlson, Greg A Dyck, Tan Lu, Kenneth J Oakes, Dale F Riedy Jr, William J Rooney, John S Trotter, Leslie W Wyman, Harry M Yudenfriend: Gathering I/O measurement data during an I/O operation process. International Business Machines Corporation, John E Campbell, February 6, 2007: US07174274 (44 worldwide citation)

I/O measurement data associated with the performance of an I/O operation process is gathered during the I/O process. The I/O measurement data is saved in an IRB memory location specified by a test subchannel instruction. An I/O interrupt signals the completion of the I/O operation process.


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Scott M Carlson, Greg A Dyck, Tan Lu, Kenneth J Oakes, Dale F Riedy Jr, William J Rooney, John S Trotter, Leslie W Wyman, Harry M Yudenfriend: Extended input/output measurement block. International Business Machines Corporation, John E Campbell, May 13, 2008: US07373435 (37 worldwide citation)

An Input/output (I/O) measurement block facility is provided that creates subchannel measurement blocks (comprising device busy values) related to performance of an I/O operation of a subchannel, wherein a device busy time value is a sum of time intervals when the subchannel is device busy during an ...


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Scott M Carlson, Greg A Dyck, Tan Lu, Kenneth J Oakes, Dale F Riedy Jr, William J Rooney, John S Trotter, Leslie W Wyman, Harry M Yudenfriend: Obtaining extended queue measurement data for a range of logical control unit queues. International Business Machines Corporation, John E Campbell, April 7, 2009: US07516248 (36 worldwide citation)

I/O measurement data for channels attached to logical control unit queues is obtained related to a plurality of logical control unit queues. A store secondary queue measurement data instruction specifies a range of queues for which extended secondary measurement blocks derived from the I/O measureme ...


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Scott M Carlson, Greg A Dyck, Tan Lu, Kenneth J Oakes, Dale F Riedy Jr, William J Rooney, John S Trotter, Leslie W Wyman, Harry M Yudenfriend: Extended input/output measurement word facility, and emulation of that facility. International Business Machines Corporation, John E Campbell, February 8, 2011: US07886082 (3 worldwide citation)

An Extended Input/output (I/O) measurement word facility is provided. Provision is made for emulation of the Extended I/O measurement word facility. The facility provides for storing measurement data associated with a single I/O operation in an extended measurement word associated with an I/O respon ...


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Scott M Carlson, Greg A Dyck, Tan Lu, Kenneth J Oakes, Dale F Riedy Jr, William J Rooney, John S Trotter, Leslie W Wyman, Harry M Yudenfriend: Extended input/output measurement word facility for obtaining measurement data in an emulated environment. International Business Machines Corporation, Fleit Gibbons Gutman Bongini & Bianco PL, Jon A Gibbons, May 5, 2015: US09026689 (1 worldwide citation)

An Extended Input/output (I/O) measurement word facility is provided. Provision is made for emulation of the Extended I/O measurement word facility. The facility provides for storing measurement data associated with a single I/O operation in an extended measurement word associated with an I/O respon ...


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James B Cammarata, Scott B Compton, Craig D Norberg, Dale F Riedy Jr, Harry M Yudenfriend: Dynamic operation mode transition of a storage subsystem. International Business Machines Corporation, Rabindranath Dutta, Konrad Raynes & Victor, February 2, 2010: US07657715 (1 worldwide citation)

A host implement a method for controlling a dynamic transition of the host from a current operation mode to a target operation mode. The method involves the host receiving an operation mode transition request to transition a logical representation of a storage subsystem as maintained by the host fro ...



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