5results about How to "Reduce latency jitter" patented technology

The invention relates to the technical field of time frequency transmission, in particular to a PTP and SDH cross-network time service method and device, an SDH overhead channel is used for transmitting a PTP time signal, compared with an E1 service channel, the overhead channel is fixed in position in an SDH frame structure, is not influenced by branch pointer adjustment and is small in transmission delay jitter, meanwhile, PTP messages are not directly transmitted, and the transmission efficiency is improved. The PTP protocol is converted into a simplified time service protocol and then is transmitted by using an SDH overhead channel, so that the bandwidth occupation is reduced, the time synchronization frequency can be improved, the time service precision is improved, in addition, a time signal transmission path is more flattened, a multi-layer communication protocol nesting and a communication protocol conversion buffer area required by directly transmitting the PTP protocol are avoided, and the transmission efficiency is improved. According to the invention, the transmission delay jitter is reduced, the time service precision is improved, and the technical problem that the time service precision is seriously degraded when the PTP time signal crosses the SDH network for long-distance transmission in the existing scheme is solved.

The application relates to a solid state disk power consumption prediction and management method, system, medium and product, and relates to the field of solid state disks.In the method, the host workload intensity in a first preset time window is predicted based on an I / O instruction stream, an expected host workload curve is obtained, and an expected host idle period is determined; the expected host power consumption value in the expected host idle period is calculated; the internal state parameters of the solid state disk are extracted according to historical operation log data; a background task trigger probability model is established, and the trigger probability of the solid state disk starting a high-power background task in the first preset time window is calculated; power consumption conflict judgment is performed according to the expected host power consumption value and the trigger probability, and a comprehensive predicted power consumption value is generated; and based on the comprehensive predicted power consumption value, an optimal target power consumption state is determined, and the solid state disk is instructed to switch to the optimal target power consumption state. The technical scheme provided by the application improves the stability of solid state disk state switching.

This invention relates to a lock-free I / O scheduling method, apparatus, and storage medium for cloud PCs. Responding to a client session request initiated by a client, the method controls a metadata coordinator to allocate storage nodes to the client and, within those storage nodes, allocates I / O shards for the client, obtaining allocation information. The metadata coordinator then returns the allocation information to the client, and the client caches this allocation information to facilitate the use of the allocation information to fulfill I / O requests. Each I / O shard includes an I / O thread bound to a first CPU core, a data plane development toolset driver, a storage performance development toolset driver, a first lock-free circular buffer, and a second lock-free circular buffer. By binding the CPU core and using lock-free circular buffers, thread switching, lock contention, and most memory copying are eliminated, reducing I / O processing latency from milliseconds to hundreds of microseconds and significantly reducing latency jitter.

The invention relates to a data sending method and device and electronic equipment, and the method comprises the steps: obtaining first current time if any to-be-sent data carrying to-be-sent time is received in a process of processing the simultaneous data sending of a plurality of preset sending ends; based on the to-be-sent time and the first current time, determining a first residual sending time length corresponding to the to-be-sent data; adding the first residual sending duration into a preset timer, and performing countdown processing in the preset timer based on the first residual sending duration; and sending the to-be-sent data under the condition that the countdown is ended. According to the embodiment of the invention, the problem that the concurrence data deterministic transmission in the data distribution service is difficult to meet can be solved.

The embodiment of the invention relates to the technical field of network communication scheduling, in particular to a time-sensitive network-oriented transmission queue hybrid scheduling method, which comprises the following steps of: dividing a system scheduling period into a time-aware shaping scheduling period and a credit shaping scheduling period; for different network end systems, transmission time slots occupied by queues with the same priority and adopting time-aware shaping scheduling are set to be mutually exclusive, and transmission time slots occupied by queues with the same priority and adopting credit shaping scheduling are set to be shared; adding scheduling starting moments to the credit scheduling shapers of the transmission queues of the different network end systems, and setting the scheduling starting moments of the different network end systems to have a preset interval; the time-aware queue of each network end system transmits data by using the time-aware shaping scheduling time period, and the credit shaping queue transmits data by using the credit shaping scheduling time period. According to the method, delay jitter of service data exchange can be reduced, and the certainty of multi-service data stream hybrid transmission is improved.