Abstract: Operating a node cluster system with a plurality of nodes in a network, wherein the cluster system appears to be a single node with only one specific network address to its network environment. Providing a shared socket database for linking network connection port identifications of a common set of network connection port identifications to the individual nodes, assigning a master function to one of the nodes, sending incoming traffic to all nodes of the cluster system wherein each node verifies its responsibility for this traffic individually, exclusive assignment of a network connection port to the responsible node for the duration of a connection of the corresponding application process by means of the corresponding network connection port identification and the link established by the shared socket database and processing of the traffic by the responsible node or otherwise by the node having the master function.

Abstract: Operating a node cluster system with a plurality of nodes in a network, wherein the cluster system appears to be a single node with only one specific network address to its network environment. Providing a shared socket database for linking network connection port identifications of a common set of network connection port identifications to the individual nodes, assigning a master function to one of the nodes, sending incoming traffic to all nodes of the cluster system wherein each node verifies its responsibility for this traffic individually, exclusive assignment of a network connection port to the responsible node for the duration of a connection of the corresponding application process by means of the corresponding network connection port identification and the link established by the shared socket database and processing of the traffic by the responsible node or otherwise by the node having the master function.

Abstract: Efficiently determining identical pieces of memory within a computer memory area, which is occupied by a virtual machine manager hosting multiple guests and the computer memory area being logically separated into memory pages of a unique size. Each guest is inspected for its structural characteristics by the virtual machine manager. The structural characteristics of each guest are compared by the virtual machine manager, wherein memory regions of guests having a similar structure are identified; and the identical memory pages are identified by the virtual machine manager by comparing hash values of memory pages located within memory regions of guests having a similar structure, wherein identical memory pages are determined by comparing hash values calculated over the contents of the memory pages.

Abstract: A method is provided for placing a virtual machine on a target virtual machine manager out of multiple virtual machine managers. System management software is connected to the virtual machine managers and selects the target virtual machine manager for placing the virtual machine. The method includes: the system management software creating a memory profile for all virtual machines hosted on the multiple virtual machine managers, the system management software evaluating probabilities for samepage mapping of the virtual machine to be placed on the multiple virtual machine managers based on the memory profiles of the virtual machines, the system management software selecting under consideration of the probabilities for samepage mapping a most appropriate virtual machine manager as the target virtual machine manager, and the system management software placing the virtual machine on the target virtual machine manager.

Abstract: Orders are processed within an Order Processing Environment which includes an Order Processing Container, Relationship Registry, and Factory Registry. The Order Processing Environment is extended by a Reference Resolvement Function Component. The RRFC provides the basic functionality for resolving References defined in the Order Document at runtime and make the referenced data available as a usual input parameter for the resources involved in the Order Processing. Each Task in the Order may contain Resource Property References and Resource Property Relationship References which are pointers to properties of resources. These references are resolved by the RRFC during the Order Processing before the Order Document is delegated from one resource to the next. When resolving a Reference, the value of the referenced Resource Property is determined and the Reference is replaced by this value so that it can be used by the resource having it defined in its Task section as a usual input parameter.

Abstract: Embodiments of the present invention address deficiencies of the art in respect to e2e SLA support in a network of both manageable and unmanageable portions and provide a method, system and computer program product for e2e SLA compliance across both managed and unmanaged network segments. In one embodiment of the invention, a method for e2e SLA compliance across both managed and unmanaged network segments can be provided. The method can include identifying both a managed segment and an unmanaged segment of an e2e network for a communications path implicated by an SLA, determining an observed delay for the unmanaged segment of the e2e network, computing from a desired delay for the communications path and the observed delay a differential delay, and constraining the managed segment to meet the differential delay in order to assure meeting the desired delay for the communications path implicated by the SLA.

Abstract: Embodiments of the present invention address deficiencies of the art in respect to e2e SLA support in a network of both manageable and unmanageable portions and provide a method, system and computer program product for e2e SLA compliance across both managed and unmanaged network segments. In one embodiment of the invention, a method for e2e SLA compliance across both managed and unmanaged network segments can be provided. The method can include identifying both a managed segment and an unmanaged segment of an e2e network for a communications path implicated by an SLA, determining an observed delay for the unmanaged segment of the e2e network, computing from a desired delay for the communications path and the observed delay a differential delay, and constraining the managed segment to meet the differential delay in order to assure meeting the desired delay for the communications path implicated by the SLA.

Abstract: A method for enabling file system tagging by an application includes creating tag associations for the file system by associating a tag with a file object. The association includes allocating a file association structure (FAS) in the storage device, which FAS has attributes including a pointer to a file handle of the file object and a list of names of tags associated with the file object. Associating the tag with a file object also includes allocating a tag structure for each tag in the file system. The tag structure includes a tag name and file associations for the tag. In response to a request for a read directory operation, the method includes retrieving the tag associations to identify the file object, dynamically assembling a directory entry structure that includes a hierarchical view of tags identified from the tag associations and corresponding file object, and returning the directory entry structure to the application.

Abstract: An order processing system including an order processing container, a factory registry, a relationship registry, and synchronization function component. The order processing system can handle orders, which are build plans including a set of tasks. The tasks can specify programmatic actions which may include creation, deletion, and modification of resources and resource topologies. The order processing container can be central engine that programmatically drives order processing actions. The factory registry can support a creation and deletion of resource instances in a resource topology defined by at least one order. The relationship registry can maintain relationships among resources. The synchronization function component can permit transparent usage of shared resources in accordance with shared usage resource topology parameters specified within processed orders.

Abstract: Embodiments of the present invention address deficiencies of the art in respect to e2e SLA support in a network of both manageable and unmanageable portions and provide a method, system and computer program product for e2e SLA compliance across both managed and unmanaged network segments. In one embodiment of the invention, a method for e2e SLA compliance across both managed and unmanaged network segments can be provided. The method can include identifying both a managed segment and an unmanaged segment of an e2e network for a communications path implicated by an SLA, determining an observed delay for the unmanaged segment of the e2e network, computing from a desired delay for the communications path and the observed delay a differential delay, and constraining the managed segment to meet the differential delay in order to assure meeting the desired delay for the communications path implicated by the SLA.

Abstract: An embodiment of the present invention relates to the field of computer technology, in particular it relates to a method for provisioning images for virtual machines, wherein for a predefined application type a pool of at least one image of a virtual machine performing said application is loaded in the main memory of the computer.

Abstract: Orders are processed within an Order Processing Environment which includes an Order Processing Container, Relationship Registry, and Factory Registry. The Order Processing Environment is extended by a Reference Resolvement Function Component. The RRFC provides the basic functionality for resolving References defined in the Order Document at runtime and make the referenced data available as a usual input parameter for the resources involved in the Order Processing. Each Task in the Order may contain Resource Property References and Resource Property Relationship References which are pointers to properties of resources. These references are resolved by the RRFC during the Order Processing before the Order Document is delegated from one resource to the next. When resolving a Reference, the value of the referenced Resource Property is determined and the Reference is replaced by this value so that it can be used by the resource having it defined in its Task section as a usual input parameter.