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Thanks! That was a pleasant read. I have been wanting to mess with cgroups for a while, in order to hack together a "docker" like many have done before to understand it better. This will help!

Are there typical use cases where you reach for cgroups directly instead of using the container abstraction?

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Thanks for the kind words. Even if you are not building a cloud service, I think it is good to understand how the underlying layer works and what are the knobs and the limits of the platform. I could see a use case where two or more processes need to run on one VM or a container, maybe for cost-saving reasons or specific architecture/security reasons, but need to be guaranteed a certain amount of resources and a certain isolation from each other.

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