Processing method and device for detecting slow disk

Abstract

Embodiments of the present invention provide a processing method and device for detecting a slow disk, which includes: obtaining the I / O delay of each input / output I / O request on the hard disk from the initial moment of the preset detection time period; The I / O delay of the / O request determines the corresponding relationship between each I / O request and each time interval; each time interval is obtained by dividing the length of the preset detection time period into multiple intervals; in the preset detection time period According to the corresponding relationship between each I / O request and each time interval, determine the number of I / O requests corresponding to each time interval; according to the number of I / O requests corresponding to each time interval and the preset threshold corresponding to each time interval , make sure the hard disk is a slow disk. Through the processing method and device for detecting slow disks, the relationship between the number of I / O requests and the I / O delay is fully considered, so that slow disks can be accurately detected and removed, and business processing by slow disks can be avoided cause adverse effects.

Description

technical field [0001] The embodiment of the present invention relates to computer technology, and in particular to a processing method and device for detecting a slow disk. Background technique [0002] In order to meet the continuous improvement of business processing efficiency, multiple hard disks are usually installed on the device, but due to bad sectors and external vibrations on the hard disk, it will take more time to process I / O (Input / Output, input / output) requests. Error correction, resulting in slow response to I / O requests, thus reducing the processing efficiency of the business processed on the hard disk, and in severe cases, interrupting the host business and affecting the performance of the device. Among them, the response to I / O requests is too slow , A hard disk that affects business processing efficiency is called a slow disk. Therefore, when the device processes services through multiple hard disks, each hard disk is detected in real time, specifically,...

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Problems solved by technology

[0003] However, in practical applications, it is found that the I / O delay on the hard disk is related to the number of I / O requests, that is, within a period of time, the number of I / O requests with lower I / O delay on the hard disk is larger, while the number of I / O requests on the hard disk is larger. The number of I / O requests with high O latency is small. Therefore, if the number of I / O requests with I / O latency less than 300ms (milliseconds) on a hard disk is 60, and the I / O latency is between 300ms and 400ms The number of I / O requests is 2. If the judgment condition for judging a slow disk at this time is "when the number of I / O requests with an I / O delay exceeding 300ms exceeds 50, the hard disk is a slow disk", then according to the judgment condition, it will be confirmed The above-mentioned hard disk is not a slow disk; but when the device is processing business, although the number of I / O requests with high I / O delay on the hard disk is small, it has a relatively large adverse impact on the efficiency of hard disk processing business. Therefore, Using the detection scheme in the prior art, the slow disk cannot be accurately detected, and the slow disk cannot be removed in time, resulting in a decrease in the performance of the device

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