A heterogeneous memory management system based on NVDIMM

Abstract

The invention provides a heterogeneous memory management system based on NVDIMM. The system comprises: a user management module used for acquiring user command information and realizing the interaction with the NETLINK communication module to obtain the kernel process message, executing operation on the user state link list according to the user command information, and sending a user message to the NETLINK communication module, and executing operations on the user mode link list according to the kernel process message; a NETLINK communication module used for receiving user message, realizingthe interaction with the NVDIMM memory management module to obtain the kernel process information, feeding back the kernel process message to the user management module; a NVDIMM memory management module used for realizing memory allocation; further, for a particular process, the NVDIMM memory management module is reached through a page-missing exception, and memory allocation is implemented. Theinvention can realize the flexible adjustment of the structure and the management strategy of the heterogeneous memory system, and has a broad application prospect.

Description

technical field [0001] The invention relates to the technical field of computers, in particular to an NVDIMM-based heterogeneous memory management system. Background technique [0002] NVDIMM is a memory stick specification that integrates DRAM (Dynamic Random Access Memory) and non-volatile memory chips. In the optimization method of IO Pattern, the rapidly developing NVDIMM needs special attention. [0003] NVDIMM is not a new and revolutionary thing. Many disk systems have long adopted NVRAM (Non-Volatile Random Access Memory) technology to achieve power-off non-volatile cache. This NVRAM is based on the PCIe bus and is guaranteed by the battery Data reliability in the event of a power outage. NVRAM is usually used as a data cache in a storage system. To ensure data reliability, two NVRAMs are designed in one system to redundant data through Mirror. Compared with NVRAM, the biggest difference between NVDIMM and NVRAM is that the interface is transferred from PCIe to DIM...

AI Technical Summary

Problems solved by technology

However, due to the limited scope of application of the existing logical architecture and management strategy combined with the characteristics of heterogeneous memory, it usually leads to serious performance loss and power consumption overhead of DRAM, and even reduces the lifespan.

At present, the above problems can only be improved by greatly adjusting the logical architecture and management strategy adjustments, but the above operations are difficult due to the existence of the memory controller

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