Remote data transmission method based on persistent memory

Abstract

The invention relates to the technical field of remote data transmission of persistent memories, and in particular to a remote data transmission method based on a persistent memory. The method comprises the steps that a client connected with RDMA and a server configured with the persistent memory are included, the client sends a remote data transmission request to the server, and when a return result is received, the return result is operated in the mode of providing a return message pool address and a callback function; the client is connected to the server through a load balancing strategy,the client provides a data transmission mode for remote procedure call operation of a remote persistent memory and a remote direct read-write memory, and the remote direct read-write memory supports remote persistent memory writing; the server receives the remote data transmission request and sends the return result; and the server manages the persistent memory and the message pool and supports calling and nesting remote procedure calling among different servers. The method has efficient multi-client concurrent remote data operation performance, server expandability and persistent memory friendliness.

Description

technical field [0001] The invention relates to the technical field of remote data transmission of persistent memory, in particular to a method for remote data transmission based on persistent memory. Background technique [0002] Persistent memory technology (Persistent Memory, PM) is a new and evolving storage technology with the characteristics of low latency, high throughput, and low cost. The throughput and latency of persistent memory are better than solid-state disk storage, and persistent memory can be directly accessed as memory; compared to dynamic random access memory, persistent memory storage is non-volatile. [0003] Remote Direct Memory Access (RDMA) is a new type of network technology, which can bypass the system kernel, avoid the overhead of complex traditional protocol stacks, and only use remote network cards without involving remote CPUs to execute remote memory Access, so it has the characteristics of low latency and high throughput, providing an effici...

AI Technical Summary

Problems solved by technology

However, there are problems in simply using RDMA to complete remote data transmission. Frequent data copying cannot take advantage of the low-latency and high-throughput characteristics of persistent memory. The persistence operation of persistent memory requires the participation of remote CPUs, and the use of new hardware will make the software layer overhead becomes more apparent

Therefore, directly transplanting the original remote data transmission method for memory disks to persistent memory cannot take advantage of the characteristics of low latency, high throughput, and durability of persistent memory. It is necessary to redesign the software according to the characteristics of new hardware.

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