International Business Machines Corporation

Niranjan Srinivasan

Sivakumar Krishnasamy

Vishal Ramachandra Mansur

Mallesh K Lepakshaiah

Pramod Achyut Bhandiwad

Prashanto Dey

Mahesh Viswanathan

Jigar Navanitrai Kapasi

In an approach to intelligent connection placement across multiple logical ports, a mapping table for a virtual machine is created. Responsive to determining that an entry exists in the mapping table for the port on the peer device, whether a virtual function exists the port on the peer device in the mapping table for the same physical function is determined. A virtual function is selected from the mapping table to connect the local port to the port on the peer device.

Intelligent connection placements on SR-IOV virtual functions

In an approach to intelligent connection placement across multiple logical ports, a mapping table for a virtual machine is created. A connection request to connect a local port to a port on a peer device is received. Whether an entry exists in the mapping table for the port on the peer device is determined. Responsive to determining that an entry exists in the mapping table for the port on the peer device, whether a virtual function exists the port on the peer device in the mapping table for the same physical function is determined. A virtual function is selected from the mapping table to connect the local port to the port on the peer device.

Provisioning and management of virtual machines and shared processor pools to process the virtual machines is provided. Shared processor pool(s) of processing units are established on server(s) of a cluster. The shared processor pool(s) are to process virtual machines to execute an application for which licensing cost is determined based on a number of processing units used to process the virtual machines executing the application. Provision of the virtual machines into the shared processor pool(s) and assignment of the processing units to the shared processor pool(s) is managed, which controls the number of processing units dedicated to processing the virtual machines executing the application, to thereby control licensing costs of executing the application. The managing can provision at least two virtual machines for different tenants into a common shared processor pool of the one or more shared processor pools.

Provisioning virtual machines to optimize application licensing costs

An embodiment of the invention is associated with a virtualized environment that includes a hypervisor, client LPARs, and virtual servers that each has a SEA, wherein one SEA is selected to be primary SEA for connecting an LPAR and specified physical resources. A first SEA of a virtual server sends a call to the hypervisor, and in response the hypervisor enters physical adapter capability information, contained in the call and pertaining to the first SEA, into a table. Further in response to receiving the call, the hypervisor decides whether or not the first SEA of the virtual server should then be the primary SEA. The hypervisor sends a return call indicating its decision to the first SEA.

Enhanced failover mechanism in a network virtualized environment

Methods, apparatuses, and computer program products for sharing a transmission control protocol (TCP) port by a plurality of applications are provided. Embodiments include receiving, by a transmission controller from a client, a first TCP packet that includes an indication of a new TCP connection for a TCP port; determining, by the transmission controller, an origination of the first TCP packet; identifying, by the transmission controller, a TCP sequence number range associated with the determined origination; selecting, by the transmission controller, an initial sequence number (ISN) within the identified TCP sequence number range; and sending, by the transmission controller to the client, a second TCP packet that includes the selected ISN.

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Bengaluru, India

Niranjan Srinivasan