International Business Machines Corporation

Hewlett-packard Development Company, L.p.

Hewlett Packard Enterprise Development LP

Salesforce, Inc.

Narsimha Reddy Challa

Adam Thomas Stallman

Swaroop Jayanthi

Charles Scott Graham

Sailaja R Keshireddy

Vamsi Penumatsa

Mohammed Sakhavullah

Timothy J Schimke

Eric Philip Fried

Prathima Kommineni

Sudheer Yetukuri

Ramalinga Raju Kalidindi

Komalapriya J

An online system performs replication of database from one system to another. A source database is replicated to a target database by performing an initial bulk copy followed by repeated change data capture. The system performs batching to group events generated by the change data capture events. The system performs a multi-constrained analysis to determine when a batch is ready for sending. The system uses multiple buffers for transmitting events to decouple the receiving and sending of events. The online system may be a multi-tenant system the source and target databases stores data of tenants. The system determines a tenant score to adjust the resources allocated during event transfer. The system splits an event into partial events, to avoid dependency between the partial events so that tasks can be executed independent of each other. Therefore, the system performs replication with reduced synchronization overhead.

Transmitting change data capture events during database replication

Embodiments of the invention provide for methods for the management of logically partitioned computing resources of a data processing system configured with a plurality of hypervisors that each manages one or more logical partitions of the computing resources. Each hypervisor and logical partitions managed thereby are allocated to a domain of a plurality of domains. Logical partitions and hypervisors allocated to a first domain are monitored to determine whether additional computing resources are needed for the first domain. Responsive to determining that additional computing resources are needed for the first domain, a second domain having available computing resources is determined. At least a portion of the available computing resources of the second domain are used by the first domain.

Dynamic management of computing platform resources

A method, system, and program product for hypervisor controlled redundancy for Input/Output (I/O) paths using virtualized I/O adapters is provided. A hypervisor detects a virtual machine exceeding a pre-defined bandwidth threshold. The hypervisor searches a shared pool of free virtual functions (VF) for a free VF. If the shared pool of free VFs is not depleted, a free VF is allocated to the virtual machine (VM). If the shared pool of free VFs is depleted, the active VMs are examined for VF capacity that may be donated to the triggering VM.

Hypervisor controlled redundancy for I/O paths using virtualized I/O adapters

Embodiments of the invention provide for systems and computer program products for the management of logically partitioned computing resources of a data processing system configured with a plurality of hypervisors that each manages one or more logical partitions of the computing resources. Each hypervisor and logical partitions managed thereby are allocated to a domain of a plurality of domains. Logical partitions and hypervisors allocated to a first domain are monitored to determine whether additional computing resources are needed for the first domain. Responsive to determining that additional computing resources are needed for the first domain, a second domain having available computing resources is determined. At least a portion of the available computing resources of the second domain are used by the first domain.

Embodiments of the invention provide for systems and computer program products for the management of logically partitioned computing resources of a data processing system configured with a plurality of hypervisors that each manages one or more logical partitions of the computing resources. A plurality of domains for the data processing system may be determined. For each domain, one or more hypervisors may be allocated to the domain such that one or more logical partitions managed by the hypervisor are allocated to the domain. Usage of the logically partitioned computing resources is based at least in part on the domain of each logically partitioned computing resource, a domain of each hypervisor, and/or a domain of a user.

Embodiments of the invention provide for methods for the management of logically partitioned computing resources of a data processing system configured with a plurality of hypervisors that each manages one or more logical partitions of the computing resources. A plurality of domains for the data processing system may be determined. For each domain, one or more hypervisors may be allocated to the domain such that one or more logical partitions managed by the hypervisor are allocated to the domain. Usage of the logically partitioned computing resources is based at least in part on the domain of each logically partitioned computing resource, a domain of each hypervisor, and/or a domain of a user.

Embodiments of the invention provide for systems and computer program products for management of logically partitioned computing resources of a data processing system configured with hypervisors that each manages one or more logical partitions of the computing resources. The data processing system is configured with domains, and allocated to each domain are one or more hypervisors and logical partitions managed thereby. For a first domain, a token is received from a second domain. The token identifies available computing resources of the second domain that are available for temporary allocation. The data processing system determines whether the available computing resources of the second domain are needed by the first domain based at least in part on the received token. Responsive to determining that the available computing resources are needed by the first domain, the available computing resources are temporarily allocated to the first domain for use thereby.

Embodiments of the invention provide for methods for management of logically partitioned computing resources of a data processing system configured with hypervisors that each manages one or more logical partitions of the computing resources. The data processing system is configured with domains, and allocated to each domain are one or more hypervisors and logical partitions managed thereby. For a first domain, a token is received from a second domain. The token identifies available computing resources of the second domain that are available for temporary allocation. The data processing system determines whether the available computing resources of the second domain are needed by the first domain based at least in part on the received token. Responsive to determining that the available computing resources are needed by the first domain, the available computing resources are temporarily allocated to the first domain for use thereby.

A method utilizes priority-based bandwidth allocation to reallocate unused bandwidth capacity of a virtualized IO resource such as a self-virtualizing IO resource to one or more virtual functions in an allocation pool based upon priorities assigned to such virtual functions.

Dynamic sharing of unused bandwidth capacity of virtualized input/output adapters

Provided is a computer-implemented method of managing data paths between a computer application and a storage device. The I/O (input/output) load data of a computer application is obtained. If the I/O load data of the computer application is above a pre-determined threshold, data paths are provisioned between the computer application and the storage device based on a pre-defined policy applicable to the computer application.

Managing data paths between computer applications and data storage devices

An apparatus and program product utilize priority-based bandwidth allocation to reallocate unused bandwidth capacity of a virtualized IO resource such as a self-virtualizing IO resource to one or more virtual functions in an allocation pool based upon priorities assigned to such virtual functions.

A method, system and computer program product are provided for implementing dynamic adjustment of Input/Output bandwidth for Virtual Machines of a Single Root Input/Output Virtualization (SRIOV) adapter. The SRIOV adapter includes a plurality of virtual functions (VFs). Each individual virtual function (VF) is enabled to be explicitly assigned to a Virtual Machine (VM); and each of a plurality of VF teams is created with one or more VFs and is assigned to a VM. Each VF team is enabled to be dynamically resizable for dynamic adjustment of Input/Output bandwidth.

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Hyderabad Telangana, India

Narsimha Reddy Challa