Embodiments relate to parallel data streaming between a first computer system and a second computer system. Aspects include transmitting a request to establish an authenticated connection between a processing job on the first computer system and a process on the second computer system and transmitting a query to the process on the second computer system over the authenticated connection. Aspects further include creating one or more tasks on the first computer system configured to receive data from the second computer system in parallel and reading data received by the one or more tasks by the processing job on the first computer system.

A method and an apparatus for transmitting data and a network device are provided. In an example of the method, after an interface board and a logical channel both corresponding to first data to be sent are determined, when the logical channel has a capability to send the first data, second data is obtained by adding header information of an interface board identifier and a logical channel identifier to the first data, and stored in a buffer corresponding to the logical channel. Next, when the second data is sent, the second data is read from the buffer, the interface board identifier and the logical channel identifier are obtained from the header information of the read second data, the first data is obtained by removing the header information from the read second data, and the obtained first data is sent to the interface board corresponding to the interface board identifier.

A new approach is proposed that contemplates systems and methods to support virtio-based data packet path optimization for live virtual machine (VM) migration for Linux. Specifically, a data packet receiving (Rx) path and a data packet transmitting (Tx) path between a VM running on a host and a virtual function (VF) driver configured to interact with a physical network device of the host to receive and transmit communications dedicated to the VM are both optimized to implement a zero-copy solution to reduce overheads in packet processing. Under the proposed approach, the data packet Tx path utilizes a zero-copy mechanism provided by Linux kernel to avoid copying from virtio memory rings/Tx vrings in memory of the VM. The data packet Rx path also implements a zero-copy solution, which allows a virtio device of the VM to communicate directly with the VF driver of the network device while bypassing a macvtap driver entirely from the data packet Rx path.

Techniques for sharing network information, such as routing table information, are described. In some examples, network nodes share information about the topology of their network. For example, nodes may share routing tables with their neighbors from time to time. To improve the performance of the network, by reducing the overhead of transmitting routing tables, the nodes share their routing tables with neighbor nodes only when those tables are updated or upon request. In other circumstances, such as when a routing table has not changed since it was last shared, each network node instead transmits an indicator, such as a routing table checksum, hash, or the like, that can be used by a neighbor node to determine the routing table is unchanged.

Systems and methods for enhancing or affecting neural stimulation efficiency and/or efficacy are disclosed. In one embodiment, a system and/or method may apply electromagnetic stimulation to a patient's nervous system over a first time domain according to a first set of stimulation parameters, and over a second time domain according to a second set of stimulation parameters. The first and second time domains may be sequential, simultaneous, or nested. Stimulation parameters may vary in accordance with one or more types of duty cycle, amplitude, pulse repetition frequency, pulse width, spatiotemporal, and/or polarity variations. Stimulation may be applied at subthreshold, threshold, and/or suprathreshold levels in one or more periodic, aperiodic (e.g., chaotic), and/or pseudo-random manners. In some embodiments stimulation may comprise a burst pattern having an interburst frequency corresponding to an intrinsic brainwave frequency, and regular and/or varying intraburst stimulation parameters. Stimulation signals providing reduced power consumption with at least adequate symptomatic relief may be applied prior to moderate or significant power source depletion.

A writing application on a computing device can reference a tail pointer to write messages to message buffers that a peer-to-peer data link replicates in memory of another computing device. The message buffers are divided into at least two queue segments, where each segment has several buffers. Messages are read from the buffers by a reading application on one of the computing devices using an advancing head pointer by reading a message from a next message buffer when determining that the next message buffer has been newly written. The tail pointer is advanced from one message buffer to another within a same queue segment after writing messages. The tail pointer is advanced from a message buffer of a current queue segment to a message buffer of a next queue segment when determining that the head pointer does not indicate any of the buffers of the next queue segment.

Data transfer, synchronizing applications, and low latency networks are disclosed. An example method includes maintaining a first buffer in a first computing device, the first buffer to receive discrete units of data from a second computing device; maintaining a second buffer in the first computing device, the second buffer to store size data identifying a size of respective ones of the discrete units of data received from the second computing device; and reading from the first buffer according to a first value of a first pointer and a corresponding one of the sizes stored in the second buffer.

The present invention relates to a data buffer memory (104) and method for storing data in a data communications network, and to a data buffer system (100) comprising such a data buffer memory. The data buffer memory comprising a data section (104a′) comprising a number of memory pages (104a); and a package descriptor section (104b′) comprising a 5 number of package descriptors (104b); wherein at least one queue (103) of packets is stored in the data section (104a′) as an ordered set of packages, and wherein a package is an ordered set of packets.

A first network device transmits, to a second network device, a first indication indicating that the first network device is willing to transmit data to the second network device using an alignment mode for aligning protocol data units (PDUs) that include data with transport packets that encapsulate the PDUs for transmission of the data to the second network device. The first network device receives, from the second network device, a second indication indicating that the second network device is requesting use of the alignment mode for transmission of data from the first network device to the second network device. In response to transmitting the first indication to the second network device and receiving the second indication from the second network device, the first network device enables the alignment mode for transmission of data from the first network device to the second network device.

Systems and methods of performing traffic shaping in a network device are provided. A network interface driver of the network device can store descriptors associated with packets received from multiple streams in a transmission queue in a first order. The network interface driver can transfer the descriptors to a traffic shaping module. In response to determining that a packet from a first stream, among the received packets, has been successfully transmitted by a network card, the network interface driver can communicate a packet transmission completion message corresponding to the packet to a software application that has awaited receipt of a packet transmission completion message before forwarding additional data packets from the first stream to the network interface driver. The network interface driver can communicate packet transmission completion messages corresponding to the packets received from the multiple streams to the software application in a second order, different from the first order.