Method and device for brushing data, electronic equipment and storage medium

Abstract

The invention relates to a data brushing method and device, electronic equipment and a storage medium, relates to the technical field of storage, and provides a method for predicting the size of a service IO load in any one brushing time period for any one brushing time period; before any one dirty brushing time period starts, determining a target dirty brushing parameter according to the number of dirty data in the cache data in the cache disk; according to a corresponding relation between the size of the business IO load and the value of the target scrubbing parameter, determining the value of the target scrubbing parameter corresponding to the size of the business IO load in any predicted scrubbing time period; and according to the determined value of the target dirt brushing parameter, performing dirt brushing processing on the cache data in the cache disk in any one dirt brushing time period. According to the method, the value of the target dirt brushing parameter can be dynamically adjusted, and the dirt brushing efficiency is improved.

Description

technical field [0001] The invention relates to the field of storage technology, in particular to a method, device, electronic equipment and storage medium for brushing dirty data. Background technique [0002] The traditional HDD (Hard Disk Drive) is cheap and has a large capacity, but it has a high delay and is easy to reach the bottleneck of read and write performance; while the SSD (Solid State Drive) has very high read and write performance, but their The capacity is relatively smaller and the price is more expensive. [0003] Using block device cache technology to combine high-speed solid-state hard disks and traditional mechanical hard disks into a hybrid disk is an optimized solution that takes into account both performance and cost. Bcache (Block cache, block cache) is a high-performance SSD cache technology that is widely used at present. It is implemented based on the Linux kernel mode and supports multiple HDD disks using the same SSD as a cache disk. Bcache su...

AI Technical Summary

Problems solved by technology

However, when the business IO load is relatively large, if fixed parameters are used for scrubbing, it is likely that the scrubbing process will not be timely, and a large amount of data will be stored in the cache disk, affecting business IO.

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