> *However* distinguishing root and non-root users also in strict VM
> overcommit would make a significant difference for general purpose
> systems, this was always my point.
>
> Can you see the non-orthogonality now?
Nope, I still disagree and there is no point going back and forth.
We both agree that there are situations where both resource accounting
(or some sort of root-protection like you want) and strict overcommit is
required.
I contend there are situations where only one or the other is needed.
More importantly, I argue the two things should be kept separate.
Putting some root safety net into strict accounting is a hack (how much
of a net? etc.). You want to keep users from ruining things - get
per-user resource limits. You want to keep the machine from
overcommiting memory and thus not OOMing? Get strict accounting. You
want both? Use both.
I provided the first piece.
Robert Love
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