International Business Machines Corporation

David Harold Surman

Jeffrey Mark Nick

David Arlen Elko

Georgette L Kurdt

Michael J Jordan

Kelly B Pushong

Steven N Goss

Dennis J Dahlen

Ruth A Allen

Douglas W Westcott

Jeffrey William Josten

Mark A Brooks

Wendell W Wilkinson

Michael D Swanson

Peter Dana Driever

Steven Bruce Jones

Karla Kay Arndt

Nicholas C Matsakis

Joseph W Gentile

Nicholas R Jones

William Charles Neiman

Lisa M Goetze

Peter Grimm Sutton

Scott F Schiffer

Inderpal Singh Narang

James Zu-Chia Teng

James C Kleewein

Allan Samuel Meritt

Gary M King

Richard Dievendorff

Catherine Mary Moxey

Jaime F Anaya

William C Shepard

James H Warnes

Ronald Elliott Parrish

Michael L Greenblatt

Seth E Lederer

Dermot Flaherty

Kenneth Glenn Rothwell

John Charles Nagy

Riaz Ahmad

Dan F Greiner

Jonathan D Bradbury

Harry M Yudenfriend

Dale Francis Riedy, Jr

Brent Cameron Beardsley

Jeffrey Paul Kubala

Ronald Morton Smith, Sr

William J Rooney

Scott Brady Compton

Peter Kenneth Szwed

Jeffrey Alan Frey

Louis P Gomes

Jessie Yu

Richard K Errickson

Matthew D Whitbourne

Peter Jeremy Relson

James H Mulder

Carol B Hernandez

Brian B Moore

Audrey A Helffrich

John Joseph Campbell

Barbara J Bryant

Haakon Roberts

John F Isenberg, Jr

Andrew W Piechowski

Hunter J Kauffman

Brent J Boisvert

Neil Alan Johnson

Roger L Brockmeyer

Omkar Ulhas Javeri

Chitta L Rao

Michael Burrill Phillips

Allen Carney

Roger L Brookmeyer

Martin Stock

An instruction that includes an operation code indicating a diagnose operation is obtained and executed within a computing environment. The executing the instruction includes retrieving selected data from a dump save area to be used to restore machine state and restoring the machine state. The restoring includes storing the selected data in a selected location. One or more storage keys used to protect access to the selected data are restored.

Diagnose instruction to restore machine state and associated storage keys

A query operation is performed to obtain information for a select entity of a computing environment. The information includes boost information of one or more boost features currently available for the select entity. The one or more boost features are to be used to temporarily adjust one or more processing attributes of the select entity. The boost information obtained from performing the query operation is provided in an accessible location to be used to perform one or more actions to facilitate processing in the computing environment.

Query and update of processor boost information

A vector entry of a signaling vector is registered to a buffer summary group. The buffer summary group includes one or more summary indicators for one or more buffers assigned to the buffer summary group. A command is processed that sets a vector indicator in the vector entry and based on setting the vector indicator in the vector entry, a summary indicator of the one or more summary indicators is set in the buffer summary group.

Vector processing employing buffer summary groups

A computing system includes an application configured to request execution of at least one translation including at least one command. A first coupling facility is configured to perform a first modification process to modify a first structure based on a received command associated with an ongoing transaction. A second coupling facility includes a secondary circular queue loaded with first data blocks indicating the first modification process, and is configured to output a message response block (MRB). The application determines a most recent modification process performed by the secondary coupling facility based on the MRB.

Computing system including enhanced application performance based on last completed operation sequence value

A system includes a shared memory accessible by a plurality of members of a shared memory system, and a processor operably coupled to the shared memory system. The processor is configured to receive a command from an exploiting member of the plurality of members, the command instructing an update to a piece of shared data, perform the update to the piece of shared data, and send an invalidation signal to each other member of the plurality of members. An invalidation signal sent to a respective member indicates that a local copy of the piece of data stored by the respective member is no longer valid, and each invalidation signal is sent asynchronously with respect to processing of the command. The processor is further configured to return the results of the command to the exploiting member.

Management of shared memory using asynchronous invalidation signals

According to one or more embodiments of the present invention a computer-implemented method includes allocating, for a partition from a plurality of partitions of a computer server, a first set of computing resources of the computer server. The method further includes receiving a request to increase processing capacity for the partition. The method further includes in response, allocating a second set of computer resources, in addition to the first set of computer resources, for the partition. The method further includes operating the partition using the first set of computing resources and the second set of computing resources.

Increasing processing capacity of virtual machines

A methodology for creating and using information identifying what and how software and/or firmware modules are used in computer systems, called functional exploitation data. The functional exploitation data can be used to identify what modules should be updated and how updates should be implemented. The functional exploitation data can also be used to identify other computer systems as candidates for updates based on similarity to computer systems that have reported problems, and propose implementing similar updates on the candidates. Functional exploitation data can also be used to identify under-utilized modules for enhancements or greater advocacy. The functional exploitation data can be implemented in the form of a concatenated string.

Making and using functional exploitation information in performing software or firmware updates

A coupling facility is coupled to one or more other coupling facilities via one or more peer links. The coupling of the facilities enables various functions to be supported, including the duplexing of structures of the coupling facilities. Duplexing is performed on a structure basis, and thus, a coupling facility may include duplexed structures, as well as non-duplexed or simplexed structures.

Controlling the state of duplexing of coupling facility structures

A computing system is configured to maintain equivalency of independent queues located in different coupling facilities. The computer system includes a first coupling facility and a second coupling facility. The first coupling facility receives a plurality of different commands instructing the first coupling facility to load data into a first structure. The first coupling facility generates a first command data block including first data corresponding to a received first command and a first sequence value indicating a sequence at which the first data was loaded into the first structure with respect to remaining data corresponding to the plurality of commands. A second coupling facility includes a second structure and a second queue. The second coupling facility receives the first command data block from a first queue of the first coupling facility and loads the first data from the second queue into the second structure based on the first sequence value.

Computing system including independent coupling facilities maintaining equivalency based on sequence values

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.

Computing system including PLSO command to maintain equivalency between independent coupling facilities

A computer-implemented method for asynchronous duplexing between two computing devices includes obtaining a task for execution by a first computing device and executing the task. A first computing task completion identifier is assigned upon execution of the task. The task with the assigned first computing task completion identifier is transferred to a second computing device and executed. A second computing task completion identifier is assigned upon execution of the task. The first computing task completion identifier and the second computing task identifier are logged into a task management log for facilitating the recovery of the first computing device by comparing the first computing task completion identifier and the second computing task identifier for identifying tasks executed by the first computing device and requiring execution by the second computing device.

Asynchronous duplexing

Aspects relate to a computer system and a computer implemented method for resolving abnormal contention on the computer system. The method includes detecting, using a processor and at a hypervisor level of the computer system, abnormal contention of a serially reusable resource caused by a first virtual machine. The abnormal contention includes the first virtual machine experiencing resource starvation of computer system resources used for processing the first virtual machine, causing the first virtual machine to block the serially reusable resource from a second virtual machine that is waiting to use the serially reusable resource. The method also includes adjusting resource allocation at the hypervisor level of the computer system resources for the first virtual machine, processing the first virtual machine based on the resource allocation, and releasing the serially reusable resource by the first virtual machine in response to the first virtual machine processing.

Method and apparatus for resolving contention at the hypervisor level

Aspects relate to a computer implemented method for resolving abnormal contention on a computer system. The method includes detecting, using a processor, abnormal contention of a serially reusable resource caused by a first process, wherein the abnormal contention includes the first process blocking the serially reusable resource from a second process that is waiting to use the serially reusable resource. The method includes collecting, in a computer storage medium, resource data in a serialized resource history database and analyzing the resource data associated with the serially reusable resource and adjusting, using the processor, resource allocation for the first process of the serially reusable resource based on the resource data. The method also includes processing, using the processor and the serially reusable resource, the first process based on the resource allocation and releasing, using the processor, the serially reusable resource by the first process in response to the first process completing.

Method and apparatus for resolving contention in a computer system

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Milton, NY, United States of America

David Harold Surman