International Business Machines Corporation

Pramod Achyut Bhandiwad

Sivakumar Krishnasamy

Prashanto Dey

Venkat Venkatsubra

Niranjan Srinivasan

Nikhil Hegde

Kavitha Vittal Murthy Baratakke

Manjunath Basappa Muttur

Mallesh K Lepakshaiah

Kavitha Ramalingam

Prithvi Srihari

G Shantala

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.

Sharing a transmission control protocol port by a plurality of applications

A method, system and computer program product for transferring data between two applications over a local network connection. The invention establishes a socket connection between the applications and transfers data through the socket connection using a pseudo socket layer interface when the two endpoints of the socket connection are on the same host. Socket application program interface comprises socket buffers for sending and receiving data. A connecting application identifies and establishes a connection with a listening socket, and places data directly in the socket receive buffer of the receiving socket. If the other end of the socket connection is on a remote host, then data is transferred using underlying network facilities.

Efficient data transfer on local network connections using a pseudo socket layer

In a computer system having memory, at least one processor and a physical input-output adapter, the at least one processor generates logical partitions, including local logical partitions and an input-output logical partition. The logical partitions have respective local virtual adapters. The input-output logical partition has a shared virtual adapter configured to communicate with the physical input-output adapter, such that a plurality of the local logical partitions share the physical input-output adapter via the shared virtual adapter. The at least one processor provides communication for ones of the local virtual adapters of the local logical partitions directly with the physical input-output adapter by a hypervisor.

Hypervisor-based data transfer

A computer implemented method, data processing system, and computer program product for efficiently using disk space when unarchiving files in the same file system. An archive file is read to identify a total number of data files in the archive file. The number of headers in the archive file is determined based on the total number of data files. A location in a first disk space of a largest data file in the archive file is determined from an offset in a header corresponding to the largest data file. The largest data file is then copied from the first disk space to a second disk space. The first disk space occupied by the largest data file is then released by truncating the archive file. The obtaining, copying, and releasing steps are repeated for each data file in the archive file until all of the data files are unarchived.

Method to efficiently use the disk space while unarchiving

An embodiment allows an application to use a unique feature of an operating system residing on a LPAR different than its own. If the application makes a request for a feature not available in the operating system that it runs on, a transporter module can check its records to verify if such a feature exists on another operating system in a different LPAR. If it does exist, the transporter communicates to a facilitator of the operating system on the different LPAR though a hypervisor. The facilitator provides the unique feature to the transporter, who then forwards it to the application in need.

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Bengaluru, India

Pramod Achyut Bhandiwad