the usage rate of CPU increasing and staying high during the recognition process

[NOBB2333]

When I was using it, I had 500000 images, about 500 GB of images. During the run, I noticed that the CPU was getting bigger and bigger, but there was no significant change in memory

At the initial stage of image analysis, it was around 300%,
When it comes to calculating the hash, it skyrockets all the way. Is there any mechanism involved

Why didn't you just fill up the CPU from the beginning

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The specific machine parameters are as follows:

Hardware name	Hardware model
CPU	E5 2650 V4 @2.2Ghz - 48 Core
Memory	256G
system	openEuler22.03
Hard disk	25T

ps：Actually, openEuler 22.03 is CentOS 8, but it's a modified version from Huawei
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