Write request processing method and memory controller

Abstract

The invention provides a write request processing method and a memory controller. The method comprises: determining that the number of write requests in a first write request set to be scheduled is less than the number of unoccupied storage units in a memory, wherein a first memory barrier exists between the write requests in the first write request set and other write requests in a write request queue; determining a second write request set, wherein the write requests in the second write request set are log write requests, the write requests in the second write request set are located behind the first memory barrier in the write request queue, and the sum of the number of the write requests in the second write request set and the number of the write requests in the first write request set is not greater than the number of the unoccupied storage units in the memory; and sending the write requests in the first write request set and the write requests in the second write request set in parallel into the unoccupied different storage units of the memory. The invention increases the efficiency of processing write requests.

Description

technical field [0001] The present invention relates to the field of computers, and more specifically, to a method for processing write requests and a memory controller. Background technique [0002] Non-volatile memory (Non-Volatile Memory, NVM) is a new type of memory, which has many advantages, such as addressing by byte, data is not lost after power failure, high storage density, no need for frequent refresh, and can Therefore, it is very suitable as memory (or main memory). However, NVM also has some shortcomings, such as relatively long write delay, limited number of writes, etc. NVM can form a hybrid memory together with existing Dynamic Random Access Memory (DRAM). Temporary data generated by applications can be stored in DRAM, and persistent data generated by applications can be stored in NVM. [0003] NVM is used as a memory, and the existing architecture and software architecture need to be redesigned or optimized. A feasible method is to use software transacti...

AI Technical Summary

Problems solved by technology

Although such a write request processing method ensures the consistency of the transaction, due to the existence of the memory gate, the number of concurrently processed write requests is small, which fails to make full use of the storage space in the memory, resulting in low write request processing efficiency.

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