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A comment on Docker and the PID 1 zombie reaping problem. Parent comment

Re:Docker and the PID 1 zombie reaping problem by teh on Tuesday January 20, 2015 @12:18PM (#8917990)
A hypervisor has a ~150-250MB memory overhead over linux containers + namespaces because it boots a full kernel.

There are other differences but if all you want from your system is reproducibility then VM images work fine of course.

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