Extensible memory object storage system based on heterogeneous memory

Abstract

The invention relates to an extensible memory object storage system based on a heterogeneous memory, which comprises a DRAM (Dynamic Random Access Memory) and an NVM (Non-Volatile Memory), and is configured to: execute a memory allocation operation through a Slab-based memory allocation mechanism and divide each Slab Class into a DRAM (Dynamic Random Access Memory) domain and an NVM domain; monitor access heat degree information of each memory object at an application layer level; and dynamically adjust a storage area of corresponding key value data in each Slab Class based on the access heatdegree information of each memory object, store the key value data of the memory object with relatively high access heat in each Slab Class in a DRAM domain, and store the key value data of the memoryobject with relatively low access heat in each Slab Class in an NVM domain; and monitor the access heat of the memory object at the application layer level. Dynamic use of the DRAM / NVM heterogeneousmemory is achieved, and compared with a traditional method of monitoring the access heat of the application at the hardware or operating system level, huge hardware and operating system expenditure iseliminated.

Description

technical field [0001] The invention relates to the technical field of computer storage, in particular to the field of optimization of special application performance in a heterogeneous memory environment, and in particular to an extensible memory object storage system based on heterogeneous memory. Background technique [0002] In today's network service architecture, the memory object storage system has become an indispensable part. By storing all performance-sensitive data in memory, the system can provide several orders of magnitude of data access speed optimization compared with disk. . However, with the development of network servers, DRAM (Dynamic Random Access Memory, DRAM) has been difficult to provide more and more memory requirements for memory object storage systems due to its power consumption and process limitations. The emergence of a new type of non-volatile memory (Non Volatile Memory, NVM) provides the possibility to solve this problem. This type of memory...

AI Technical Summary

Problems solved by technology

The strategy at the hardware level is mainly based on a single physical page, and the dynamic page migration is realized by modifying the organization and scheduling strategy of the memory controller; the strategy at the operating system level is mainly based on a single virtual page, by monitoring each virtual page in the operating system. The page access frequency is used to perform live migration; the defect of hardware level and operating system level management is that they can only implement suboptimal data placement strategies, mainly because a single page may contain data objects with different access frequencies, and this The class strategy does not recognize the situation

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