2results about How to "Reduce latency jitter" patented technology

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.