34 results about "Port performance" patented technology

Data structures, a method, and an associated transmission system for multicast transmission on network processors in order both to minimize multicast transmission memory requirements and to account for port performance discrepancies. Frame data for multicast transmission on a network processor is read into buffers to which are associated various control structures and a reference frame. The reference frame and the associated control structures permit multicast targets to be serviced without creating multiple copies of the frame. Furthermore this same reference frame and control structures allow buffers allocated for each multicast target to be returned to the free buffer queue without waiting until all multicast transmissions are complete.

A method, computer program product, and distributed data processing system that allows a single physical I/O adapter, such as a PCI, PCI-X, or PCI-E adapter, to track performance and reliability statistics per virtual upstream and downstream port, thereby allowing a system and network management to be performed at finer granularity than what is possible using conventional physical port statistics, is provided. Particularly, a mechanism of managing per-virtual port performance metrics in a logically partitioned data processing system including allocating a subset of resources of a physical adapter to a virtual adapter of a plurality of virtual adapters is provided. The subset of resources includes a virtual port having an identifier assigned thereto. The identifier of the virtual port is associated with an address of a physical port. A metric table is associated with the virtual port, wherein the metric table includes metrics of operations that target the virtual port.

The invention discloses a compact terahertz power synthesis frequency multiplier circuit which comprises an upper metal substrate and a lower metal substrate, wherein a cavity formed by the upper and lower metal substrates is internally provided with an input waveguide structure, a synthesizing channel, an output waveguide structure and a direct current biasing circuit which are in the same structure, respectively, wherein one end of the synthesizing channel is connected with the input waveguide structure while the other end of the synthesizing channel is connected to the output waveguide structure; the synthesizing channel is internally provided with two thin film chips symmetrical in mirror; and one group of the thin film chips is connected to the upper metal substrate while the other group of the thin film chips is connected to the lower metal substrate. The direct current biasing circuit is provided with chip capacitors connected with the thin film chips. Based on a micro/nano technology, the compact terahertz power synthesis frequency multiplier circuit has the characteristics of compact structure and high integrating degree. The compact terahertz power synthesis frequency multiplier circuit has the characteristics of good port performance and higher power. The compact terahertz power synthesis frequency multiplier circuit has the characteristics of low cost and good consistency and is convenient for large-scale production.

The invention discloses a method for detecting network port performance of an IPTV set-top box. The device comprises the IPTV set-top box and a loop-back network cable, wherein the head end of the loop-back network cable is plugged into a network port of the IPTV set-top box (STB), so the IPTV set-top box is used for transmitting and receiving data packets through the loop-back network cable connected to the network port, and determining whether the loop-back network cable is connected correctly according to the transmitted data packets and the received data packets; and if the loop-back network cable is connected correctly, every performance index of the network port is detected in the processes of transmitting and receiving the data packets, every detected performance index is compared with a preset performance index threshold value, and the network port performance is determined whether to meet requirements or not according to a comparison result. By using the method and the device disclosed by the invention and inserting the loop-back network cable into the set-top box after the set-top box is started, the detection of every type of the performance indexes of the network port of the set-top box can be performed automatically.

The invention discloses a method for testing the performance of a network port of a set-top box. The method comprises the following steps: (1) preparing a special network RJ45 registered jack; (2) inserting the special network RJ45 registered jack in the network port of the to-be-tested set-top box; (3) running a set-top box network port performance detection thread by the to-be-tested set-top box; (4) transmitting a network data packet back to the network port of the set-top box after passing through the registered jack, and receiving and processing the network data packet through a receiving module of the thread; (5) if the particular network data packet is not successfully received, adding 1 to a packet loss counter; (6) if the particular network data packet is received, but the data CRC in the data packet fails the verification, adding 1 to a wrong packet counter; and (7) if the particular network data packet is received, and the data CRC in the data packet passes the verification, adding 1 to a successfully received data packet counter. By adoption of the method disclosed by the invention, the link and connection correctness of the physical network port of the set-top box can be tested, the packet loss rate and the throughput of the network port of the set-top box can also be tested, and long-time pressure burn test is facilitated.

A system and method for port performance ranking in a multi-protocol switch includes monitoring one or more first parameters, the one or more first parameters associated with operating condition of one or more ports of the multi-protocol switch. Each of the one or more first parameters is compared with an associated predefined criterion to determine deviation from the associated predefined criterion. One or more eligible ports is determined from the one or more ports based on non-deviation of each of the one or more first parameters from the associated predefined criterion. For each of the one or more eligible ports, each of one or more second parameters is compared with an associated predefined threshold, the one or more second parameters associated with port traffic statistics. The one or more eligible ports are ranked based on the comparison between each of the second parameters and the associated predefined threshold.

The invention discloses a method for early warning and disposal of optical cable risk in electric power communication network, in particular, the method comprises seven steps of establishing basic resource model, collecting equipment port performance data, calculating optical cable core attenuation, defining optical cable core attenuation reference value, performing early warning analysis of optical cable risk, disposing optical cable risk early warning list, and clearing early warning and insepcting. The invention has obvious beneficial effect and strong practicability, and greatly improvesthe operation and maintenance working level and the network operation quality.

The invention discloses a method for testing the high-speed port performance on the basis of low-speed ports of an Ethernet switch. The method comprises the following steps that a VLAN (virtual local area network) is configured for the low-speed ports and high-speed ports of the Ethernet switch, wherein the product of the number of the low-speed ports and the port speed is equal to the high-speed port speed; the forwarding flow direction relationship of the VLAN is configured; for the low-speed ports, except the first port and the last port, other low-speed ports are mutually connected, and the high-speed ports are mutually connected; one port of an Ethernet performance test instrument is connected with a first low-speed port of a switch to be tested; the other port of the Ethernet performance test instrument is connected with the last low-speed port of the switch to be tested, so that the test is performed. The method has the advantages that the performance test of the high-speed port of the Ethernet switch can be completed by the Ethernet performance test instrument with low bandwidth; the development cost is reduced; the test method is simplified.

The embodiment of the invention provides an IP network optical port performance evaluation method and equipment. The method comprises the following steps: receiving optical port data and optical powerrange data of an optical port returned by IP network device; determining the number of channels of the optical port according to the optical port data; acquiring current optical power corresponding to each channel of the optical port according to a preset sampling period, and recording a maximum value and a minimum value of the current optical power in the preset sampling period; and determiningthe optical power performance of the optical port by comparing the maximum value and the minimum value of the current optical power in the sampling period corresponding to each channel of the opticalport with the optical power range data, so that the normal use of IP network device is not influenced, a test with a service and a batch test can be carried out, and the test efficiency is relativelyhigh.

A method is provided for predicting the performance of a loudspeaker port and optimizing port design. The method involves defining the geometries of a loudspeaker port, modeling the bi-directional fluid flow in the defined port utilizing a modeling method known as Computation Fluid Dynamics (“CFD”) and analyzing the flow model to determine whether the flow characteristic displayed in the model represent optimum flow characteristics for port performance. To optimize port design, the geometries of the port may be altered and modeled until the flow characteristic represents flow indicative of optimum port performance.

The present invention is one kind of Chinese voice synthesis method based on MIDI algorithm. The method includes establishing waveform library via storing Chinese voice including 23 initial consonants and 34 vowels in DLS wavetable, attaching the waveform library to the tail of the standard DLS wavetable, performing ADSR correction to vowels, converting text first into spelling and then into MIDI message, and final synthesizing Chinese character voice via sound card or other MIDI backing-up player. The present invention can compress greatly the memory space, reduce operation amount and save system cost, and has excellent porting performance and expandability.

The invention discloses an X86 platform network port performance test method and device based on a DPDK technology, and the method comprises the steps: obtaining a port name and a PCI bus number of a tested network port, and generating a corresponding relation table of the PCI bus number and the port name; performing PCI binding by using a DPDK script, and performing UP processing on two ports for receiving and transmitting data; performing data receiving and transmitting on two ports for receiving and transmitting data through a data receiving and transmitting tool, counting data actually received and transmitted by the two ports in each receiving and transmitting process, updating the total amount of the data, and writing the data into a log file in real time; analyzing whether the packet loss quantity and the packet loss rate are in a preset standard in a preset time period, and if the packet loss quantity and the packet loss rate exceed the preset standard, judging that the test fails and the network port performance is unqualified; and if yes, determining that the test is successful and the network port performance is qualified. According to the method, the flow, the success rate and the packet loss rate of the two ports in a period of time can be automatically counted, the test efficiency of the network port function is greatly improved, and a sufficient basis is provided for the network port performance.

The invention discloses a leaving-factory detection device based on communication equipment production and a detection method thereof, which relate to the technical field of communication equipment production. The leaving-factory detection device based on communication equipment production comprises a port detection device and anti-interference detection device. The detection method comprises thefollowing steps of S1, wire arrangement and wire connection detection, S2, port detection, S3, anti-interference detection and S4, appearance detection. Wire arrangement, wire connection, port performance and anti-interference performance of leaving-factory communication equipment can be detected, supervision on the production quality of the communication equipment is further enhanced, the detection method of the detection device is simple, detection alone can be realized, a computer does not need to be used, the occupied resources are few, the cost is low, the operation is simple, the time isshort, and the efficiency is high.

The invention discloses an Iur-crossing port performance management method and system. The method comprises the steps as follows: a service radio network controller (SRNC) determines the migration Iur-crossing port of an HSPA (High Speed Packet Access) service cell, records and regularly transmits migration information to an OMC (Operation Maintenance Center) during migration process; and the OMC regularly summarizes the migration information, carries out performance management, and acquires a management result. The invention also discloses the Iur-crossing port performance management system. The method and system with the performances is favorable for an operator to analyze the performance of the system, and maintain and improve a network.

The invention relates to a comprehensive displaying device which comprises a CPU. A VFD displaying screen is connected with a displaying end of the CPU. The VFD displaying screen is connected with a low-voltage power supply. An output end of the low-voltage power supply is connected with the CPU. An input end of the low-voltage power supply is connected with a high-voltage power supply. The CPU is connected with a unit state/stoppage data I/O port, a CAN communication end and a serial port communication end. Current data, voltage data and frequency data which are detected are processed by the CPU and displayed through the VFD displaying screen. Meanwhile, the CPU can exchange data with other equipment through the serial communication end, the CAN communication end and the unit state/stoppage data I/O port. The comprehensive displaying device has the advantages of being high in displaying precision, low in energy consumption, high in port performance and long in service life.