International Business Machines Corporation

Stephen James Cocks

James Thomas Rayfield

Avraham Leff

Donald Francis Ferguson

Thomas James Freund

Glyn Normington

Robert Anthony Storey

Andrew John Bainbridge

Russell Ley Newcombe

Stephen James Hobson

William Thomas Newport

Amanda Elizabeth Chessell

Graham Derek Wallis

Ian Robinson

Robert Howard High, Jr

David Joseph Wisneski

James Irwin Knutson

Michael Cheng

Lori Milhans VanGulick

Wei-Li Alexander Huang

Katheryn Sarah Warr

To enable adaptive monitoring of the resource, metrics about the workload received at the resource from one or more clients are used to derive monitoring feedback comprising a recommendation as to how the monitoring should be performed. This is then used as input to a decision making process controlling the monitoring of the resource. The recommendation may be for the monitor to increase or decrease its monitoring interval. The resource may decide to increase or decrease its monitoring depth or checking, or may suggest a new monitoring depth to the monitor.

Method, apparatus, and computer program product for enabling monitoring of a resource

The present invention provides a method, apparatus and computer program product which enables a target service to provide operations which behave, on a per operation basis, in a way appropriate to the type of client that requested the operation to be performed. As a result the target service can provide operations which behave differently for different clients. Further the client can obtain details of the behavior characteristics of the operations, according to its type, at runtime and act appropriately in the event of the request being timed out or resulting in a communication failure. For example, the client middleware can take action to re-issue a timed out request if the behavior characteristic for that operation indicates that multiple invocations of the operation will yield the same result.

Client/server request handling

A method and implementing system are provided in which CORBA (Common Object Request Broker Architecture) Life Cycle Service factory finding capabilities are utilized by a CORBA Query Service query evaluator to find queriable collections using simple names. The Life Cycle Service, using the simple name, searches a distributed object oriented environment for both Home and non-Home collections. Means are also provided to make known to Life Cycle Services, the queriable collections which are not also Homes.

Finding named collections via life cycle interfaces

A method and implementing system are provided in which CORBA (Common Object Request Broker Architecture) Life Cycle Service FactoryFinder capabilities are combined with CORBA Naming Service resolve operations on a Naming Context. The methodology allows EJBHomes in a distributed network to be found using CORBA Life Cycle Services while maintaining support for the EJB (Enterprise Java Bean) programming model of using JNDI (Java Naming and Directory Interface) lookup calls to locate EJBHomes. Usage of Life Cycle Services in an EJB environment for finding EJBHomes by using Naming interfaces is enabled while using Life Cycle Service semantics. An exemplary embodiment is provided to allow deployment in different environments (including environments without Life Cycle support) and reconfiguration of the FactoryFinder being used, without requiring changes to source code.

Finding named EJB homes via life cycle support

In a client/server data processing system where a client sends a work request to a server which includes a group of workload managed server data processing processes each of which is capable of performing the work request, a server data processing apparatus running a server data processing process, the apparatus has: a data storage unit storing mapping data which maps a particular server data processing process to each of a plurality of groups of workload managed server data processing processes; a means for receiving from a client a request for the identity of the mapped server data processing process corresponding to a particular group of workload managed server data processing processes, the particular group being specified in the request; a means for accessing the data storage unit to determine, for the particular group specified in the received request, the identity of the mapped server data processing process; and a means for returning the identity of the mapped server data processing process to the client; wherein the request received from the client is associated with an entity whose lifetime is coupled to the lifetime of the server data processing process.

Centralized affinity maintenance in a workload managed client/server data processing system

In a data processing environment where a client requests a server to perform part of its processing, a method of updating the client's version of server-related data without requiring the client to be a server, includes steps of: receiving, at a control point server, a first request from the client requesting that server-related data be transferred from the control point server to the client; and in response to the first request, sending the server-related data from the control point server to the client, along with a unique bind token identifying a version number of the server-related data such that each time the server-related data changes a new unique bind token is associated with the data, where the client uses the server-related data to form a second request for the server to perform part of the client's processing, and where the client sends said bind token to the server as part of the second request.

Updating server-related data at a client

A method of performing workload management within an object-oriented client/server computing environment wherein one of a plurality of servers is chosen to satisfy a client request based on at least one workload management policy, said method, which takes place within the client, includes steps of: deciding whether a client application program has issued a request for a server to do some work; forming an extended object reference based on said request, said extended object reference having, in addition to a server address field and an object key field, at least one additional field; accessing workload management policy data based on said extended object reference; and selecting one of said plurality of servers based on said accessed workload management policy data.

Workload management in a client-server network with distributed objects

Growing community of inventors

Winchester, United Kingdom

Stephen James Cocks