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In this article, the editor introduces in detail "what is the role of Linux kworker", the content is detailed, the steps are clear, and the details are handled properly. I hope that this article "what is the role of Linux kworker" can help you solve your doubts? let's follow the editor's ideas to learn new knowledge.

Kworker is a placeholder process for kernel worker threads that performs most of the actual kernel processing, especially when there are interrupts, timers, I / O, and so on.

View in the system

Use ps-ef under Linux | grep kowrker

What do you think of the content displayed?

Displayed format kworker/%u:%d%s

U: is an acronym for unbound, which means that 2 of the unbound CPU,kworker / u2ID 0 is the ID of work_pool. What does not take u is the workerq that binds a specific cpu, which initializes in init_workqueues and assigns a worker to each cpu. If the nice of the worker is less than 0, it has a high priority, so the H attribute is added. The name of an industrious worker with negative value is suffixed with'H'. What's the use of 12345?

Kworker processes are kernel working processes, and many processes are harmless. In the Linux system, small tasks are assigned to different work queues, allowing workers in the work queue to complete the reference.

Kernel worker threads can do anything, such as some random examples:

Do page cache write back to handle certain kinds of hardware events (such as hardware interrupts, timers, I / O, etc.) and many other things

To know what any kworker is doing, you can look at cat / proc//stack.

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