SSD hard disk under multiple CPUs

Abstract

The invention provides an SSD hard disk under multiple CPUs. The SSD hard disk comprises a first processor, a second processor, a third processor and a fourth processor, wherein the first processor isresponsible for data processing of an NVMe at the front end of a Host, the second processor is responsible for data processing of a flash conversion layer, the third processor is responsible for managing the data processing of the back end of an NAND, and the fourth processor is responsible for data processing of non-CPU resources. The problem in the prior art is solved that when the load of onlyone CPU is extra heavy under a certain read-write mode, the host cannot obtain SRAM resources and the like occupied by another CPU, causing the waste of resources, the technical effects are achievedthat resource allocation for multiple CPU layers is optimized, the SSD hard disk is suitable for some tasks without heavy load, only one CPU resource is needed, but when multiple resources such as SRAM resource and the like are needed, enough non-CPU resource can be obtained to speed up task processing, and the multiple CPU layers can have one CPU responsible for resource scheduling, and the logicis centralized.

Description

technical field [0001] The invention relates to the technical field of computers, in particular to an SSD hard disk under multiple CPUs. Background technique [0002] The mainstream SSD controller SOC (Solid State Disk Controller System Chip) generally includes three processors, one is responsible for Host front-end NVMe-related business, which can be called Host CPU (host server); one is responsible for processing FTL (Flash transform layer) The flash conversion layer converts the access in the form of the host LBA sector into the access in the form of NAND Flash (flash memory) blocks and pages, which can be called Core CPU (core processor); the last one is the CPU responsible for managing the NAND backend, It may be called Media CPU (Media Processor). As hosts continue to improve SSD performance requirements, the processing capabilities of 3 CPUs can no longer meet the requirements, so there is a 4-CPU SSD controller (solid-state drive controller) architecture. The mainst...

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides an SSD hard disk with multiple CPUs, which solves the problem that in the prior art, the read-write mode of the host is very random. When only one CPU load is particularly heavy in a certain read-write mode of the host, the host cannot obtain The resources such as SRAM occupied by the other CPU lead to the technical problem of wasting resources, and realize the optimization of resource allocation for multiple CPU layers. At the same time, it is very suitable for some tasks with low loading. Only one CPU resource is needed, but a lot of SRAM and other resources are needed. When resources are available, enough non-CPU resources can be obtained to speed up task processing. Multiple CPU layers will have one CPU responsible for resource scheduling, and the technical effect of logical concentration

Images