A network device calculates an idle forwarding capability of a target egress queue or a target egress port on the network device, where the idle forwarding capability represents a difference between an upper limit of a data forwarding amount of the target egress queue or the target egress port and a current actual forwarding amount. Then, the network device obtains a first packet carrying an adjustment request, and when the first packet does not have a preset mark, the network device obtains a decision result based on the idle forwarding capability and the adjustment request.

System and method for managing storage requests issued from multiple sources in a distributed storage system utilizes different queues at a host computer in the distributed storage system to place different classes of storage requests for access to a virtual storage area network. The storage requests in the queues are processed using a fair scheduling algorithm. For each queue, when the storage requests in the queue exceeds a threshold, a backpressure signal is generated and transmitted to at least one source for a class of storage requests queued in one of the queues corresponding to that backpressure signal to delay issuance of new storage requests of that class of storage requests.

Technologies for pacing network packet transmissions include a computing device. The computing device includes a compute engine and a network interface controller (NIC). The NIC is to select a first transmit descriptor from a window of transmit descriptors. The first transmit descriptor is associated with a packet stream. The NIC is also to identify a node of a plurality of nodes of a hierarchical scheduler. The node is associated with the selected first transmit descriptor. The NIC is also to determine whether the identified node has a target amount of transmission credits available and transmit, in response to a determination that the identified node has a target amount of transmission credits available, the network packet associated with the first transmit descriptor to a target computing device.

There is provided a transmission apparatus including at least one memory in which a first data including a first destination information and a second data including a second destination information are stored, and at least one processor coupled to the at least one memory and the at least one processor configured to control the at least one memory to output the first data and the second data stored in the at least one memory according to a set rate, and control the set rate to output one of the first data and the second data according to a priority degree.

A technique allows stations to utilize an equal share of resources (e.g., airtime or throughput). This prevents slow stations from consuming too many resources (e.g., using up too much air time). Fairness is ensured by selective dropping after a multicast packet is converted to unicast. This prevents slow stations from using more than their share of buffer resources. Multicast conversion aware back-pressure into the network layer can be used to prevent unnecessary dropping of packets after multicast to unicast (1:n) conversion by considering duplicated transmit buffers. This technique helps achieve airtime/resource fairness among stations.

In one embodiment, a device in a network loads a selectable lexicon. The device receives a command that uses the loaded lexicon. The device interprets the command using the loaded lexicon. The device generates a configuration for one or more network nodes in the network based on the interpreted command. The device causes the one or more network nodes to implement the configuration.

A queue management method and apparatus are disclosed. The queue management method includes: storing a first packet to a first buffer cell included in a first macrocell, where the first macrocell is enqueued to a first entity queue, the first macrocell includes N consecutive buffer cells, and the first buffer cell belongs to the N buffer cells; correcting, based on a packet length of the first packet, an average packet length in the first macrocell that is obtained before the first packet is stored, to obtain a current average packet length in the first macrocell; and generating, based on the first macrocell and the first entity queue, queue information corresponding to the first macrocell of the first macrocell in the first entity queue, a head pointer in the first macrocell, a tail pointer in the first macrocell, and the current average packet length in the first macrocell.

A transmitter can manage when a transmit queue is permitted to transmit and an amount of data permitted to be transmitted. After a transmit queue is permitted to transmit, the transmit queue can be placed in a sleep state if the transmit queue has exceeded its permitted data transmission quota. The wake time of the transmit queue can be scheduled based on a token accumulation rate for the transmit queue. The token accumulation rate can be increased if the transmit queue has other data to transmit after the data transmission. The token accumulation rate can be decreased if the transmit does not have other data to transmit.

A network device and method of constraining a client's access to a packet memory of a network device are provided. A packet memory is configured to store packets, and a client is configured to access the packet memory based on the client receiving a credit. A rate limiter is configured to grant credits to the client according to a configurable threshold. The configurable threshold comprises a sum of an integer component and a fraction component, and the sum defines an average rate at which the credits are granted to the client by the rate limiter. A network port is configured to receive packets from the client.

This patent application relates generally to a shared-credit arbitration circuit for use in arbitrating access by a number of virtual channels to a shared resource managed by a destination (arbiter) based on credits allotted to each virtual channel, in which only the destination is aware of the availability of a shared pool of resources, and the destination selectively provides access to the shared pool by the virtual channels and returns credits to the source(s) associated with the virtual channels when shared resources are used so that the source(s) are unaware of the destination's use of the shared resources and are unhindered by the destination's use of shared resources. Among other things, this can significantly reduce the complexity of the source(s) and the required handshaking between the source(s) and the destination.