Query about workqueues

[Raj Kumar]

Hi,

I was trying to understand the workqueues in more details:

e.g. it is given

kworker/u4:0

kworker/0:0

What does u4:0 represents and similarily 0:0 represents. I was glancing into the code when pool->cpu>0, there is u appended.

Can you please explain u4:0 and 0:0 (what does it represent) in workqueue kworker?

Regards,

Raj Kumar

[Boyan Vladinov]

Name: kworker/%u:%d%s (cpu, id, priority)
Purpose: Execute workqueue requests

https://www.kernel.org/doc/Documentation/kernel-per-CPU-kthreads.txt

[Raj Kumar]

Hi Boyan,

Thanks for your reply. But this documentation is stating:

kworker/%u:%d%s (cpu, id, priority)

which means it will print like kworker/0:0

if cpu is 0, id is 0 and priority is 1

but here it is:

kworker/u4:0
what does u, 4, 0 represents here, it still did not answer my question.
Can you explain on this?

Regards,
Raj

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[Raj Kumar]

Hi Boyan,

I looked into the code of workqueues and understood:

kworker/u4:0

kworker/0:0

In this u means, it is not bound to any cpu, rest it is cpu and instance. Correct me if I an wrong.

regards,

raj

On Wed, Jul 2, 2014 at 12:12 PM, Boyan Vladinov <boyan.v...@gmail.com> wrote:

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