International Business Machines Corporation

Gary T Hunt

Michael Norman Day

Steven T Pancoast

Mark Wayne Mueller

Ronald Xavier Arroyo

Jeffrey Owen Fisher

Daniel Dean Heimsoth

Silous F Clements

James T Hanna

Jimmie Darius Edrington

James M McVey

Ernest L Miller

Eddie Lambert

Kevin Lynn Hill

Brent T Hoegh

Ronald Smetana

A directory schema for directory applications or platforms that store common attributes in a distributed directory. According to the schema, a given attribute is stored in a directory together with a signature that identifies given information, e.g., the purpose and version of the attribute. Thus, when an attribute is migrated to a new value, e.g., upon the release of a new application version, the directory schema need not be extended. Rather, the attribute may be maintained in the schema is the same location as was used with an earlier application version.

Attribute signature schema and method of use in a directory service

Each client in an intranet includes at least the minimum functionality required to serve a remote request such as an HTTP request. Existing browsers within the intranet may share their collective local caches to form a scalable cache. The intranet proxy routes page requests from one client within the intranet to another when a local cache within the intranet contains a current copy of the requested page. A trust protocol insures that clients serving as caches may be trusted by the proxy, while a refresh mechanism such as a time-out policy ensures that the page is reloaded after a predetermined period of time. The collective cache thus scales with the number of browsers in the intranet, and existing browsers may be employed without direct modification. The same mechanism may be utilized, either within a network or through an Internet service provider, to permit individuals and companies to maintain Web sites on their own personal systems without paying fees for uninterrupted connection to the Internet.

Shared web page caching at browsers for an intranet

Browsers for different clients in an enterprise are configured to cache pages at least in part in a common file area in a remote, shared file server. Duplication or redundancy in caching pages is thus eliminate, and a larger body of distinct pages may be cached within a given allocation of memory space. Each remote, shared cache includes a shared cache contents data structure including information required to &ldquo;time-out&rdquo; pages and to determine if a page is in the process of being loaded or updated by another client sharing the cache. Where multiple caches are supported by the browsers, the remote, shared cache may form part of a local/remote cache hierarchy. When accessing a page, browsers check each cache in a multiple cache configuration, updating all caches as necessary.

Remote/shared browser cache

A method implemented in a computer network supports a number of client-server sessions from a protocol stack having a single physical adapter associated therewith. The method begins by associating at least two logical adapters to the physical adapter, with each of the logical adapters being adapted to handle a predetermined subset of the number of sessions. Sessions are then allocated to the logical adapters in a sequential manner. In particular, the sessions are allocated to a first logical adapter until the predetermined subset of the number of sessions for that adapter is reached, whereupon the sessions are allocated to a second logical adapter. Each session is associated with a pair comprising an identifier for the logical adapter and an entry in an associated table, with the table entry being a socket number. Communications are 'routed ' through the physical adapter and the logical adapters by associating socket numbers with logical adapter/session number pairs.

Supporting multiple client-server sessions from a protocol stack

A method, system and process for allowing identical server names on a computer system to be shared between multiple LAN adapters. A processor, under the control of the process, prompts a user for entry of a new adapter name. The adapter name is used to build a name query which is transmitted to a local area network (LAN) to determine if the adapter name is already in use by the same computer. If the adapter name is in use by the same computer, then the new adapter is linked to the existing adapter with the same name. However, if no response is received after an appropriate number of retry attempts, then the name is added to the local table of LAN adapter names. When the computer receives traffic addressed to a shared name, the process ensures that only one adapter at a time responds. The responsibility for responding to this traffic is transferred to all adapters sharing this name. This technique results in distribution of workload across multiple adapters and a resultant increase in throughput realized by spreading the load of LAN requests across multiple LAN adapters.

System for sharing name among network adapters by, dynamically linking

A method and apparatus for powering down a computer system while saving the state of the system at power down is disclosed. The system maintains the capability to suspend the execution of an application program operating on the system at any point and resuming execution of the application program at that same point at a later time. The time at which the system may be powered down and then powered back up again is totally arbitrary and depends only upon the user of the system. At the time the system is powered off, the contents of all active registers as well as the states of all I/O devices in the system are stored in a special save area of system memory. This special save area is provided with power during the suspended time in order to retain the state of the system at the time it was powered down. By using this special save suspend area, the main memory area of the system is available to any application programs independently of the system save memory requirements. Additionally, the system may be powered on and off under software control thereby providing the capability for unattended system operation using an alarm function.

Apparatus and method for suspending and resuming software applications

The present invention describes an integrated text and data processing system allowing processing of link data before output. The system also provides simultaneous dual emulation of a display and printer normally associated with a host data processor. In accordance with the first aspect of the invention, an input/output terminal includes a support logic circuit for interconnecting the input/output terminal to a port of an intermediate control unit attached to a central processing unit. The input/output terminal includes separate link and display buffers whereas link data may be stored in the link buffer for processing before output to the display associated with a text processor. In accordance with another aspect of the invention, the input/output terminal may include a plurality of support logic circuits each connected to one of the ports of one or more control units associated with one or more central processing units. This structure allows the text processor in the input/output terminal to simultaneously yet independently emulate a display and printer normally associated with a host central processing unit.

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Austin, TX, United States of America

Gary T Hunt