Re: [RFC PATCH v1] pin_on_cpu: Introduce thread CPU pinning system call

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----- On Jan 22, 2020, at 10:44 AM, Jan Ziak 0xe2.0x9a.0x9b@gmail.com wrote:

Hello

I would like to note that this does not help userspace to express dynamic scheduling relationships among processes/threads such as "do not run processes A and B on the same core" or "run processes A and B on cores sharing the same L2 cache".

Indeed, this is not what this system call is trying to solve. Does the name "pin_on_cpu" lead to confusion here ?

I thought that cgroups was already the mechanism taking care of this kind of requirement.

Thanks,

Mathieu