Method for improving handling capacity performance of solid-state disk

Abstract

The invention relates to a method for improving handling capacity performance of a solid-state disk. The method comprises the steps that (1) a type of a solid-state disk interface is judged, and if the solid-state disk is an SATA interface or an SAS interface, the step (2) is started; if the solid-state disk is a PCIe interface, the step (3) is started; (2) the number of lines and the line depth of each line are increased, a user-state storage driver and a user-state TCP / IP protocol stack are established, a user-state timing polling mode is adopted, a state register of the solid-state disk is inquired in real time, and a necessary I / O operation is conducted; (3) an IO scheduling layer is removed, a simplified NVMe protocol is directly hung on an upper interface layer, and the discovery and maintenance of the solid-state disk are achieved through driving of a PCIe bus; after simulation verification is completed, the handling capacity of the solid-state disk can be effectively improved, and compared with a traditional IO protocol stack, the handling capacity can increase by 20% or above.

Description

technical field [0001] The invention relates to a method for improving the throughput performance of a solid-state hard disk, belonging to the field of data storage performance. Background technique [0002] In the past, the mainstream storage system was based on a single mechanical disk, limited by the characteristics of the mechanical disk structure and mechanical technology, the performance of the storage system was very low. Due to the advantages of low power consumption, small size, light weight, and vibration resistance, SSD hard disks are used in a wide range of scenarios. However, SSD hard disks are expensive and easily damaged, so from the perspective of cost savings, all-flash storage arrays have not yet been fully applied. Therefore, in order to pursue large capacity, high performance and low cost, disk arrays based on mixed media have attracted extensive attention from industry and academia. [0003] Studies have shown that using SSD solid state disks as the Ca...

AI Technical Summary

Problems solved by technology

[0005] For high-speed storage devices, the traditional I / O protocol stack has the following problems: For an IO request, it needs to go through the VFS layer, Block layer, and SCSI layer, and the SCSI layer includes the upper driver device layer, SCSI core layer and the underlying driver device. layer, which will cause frequent exchange of CPU memory and cause long delays; there is only one queue in the Block layer, which will cause multi-threaded IO to wait in line, resulting in blocking; the SCSI protocol layer needs to support multiple devices, and the protocol stack is heavy; the queue depth is not enough. For faster underlying storage devices, it will wait due to lack of IO requests

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