Re: RFC [patch 13/34] PID Virtualization Define new task_pid api

[Kirill Korotaev <dev@sw.ru>]

> > There are two issues here.
> > 1) Monitoring.  (ps, top etc)
> > 2) Control (kill).
> >
> > For monitoring you might need to patch ps/top a little but it is doable without
> > 2 pids.
> >
> > For kill it is extremely rude to kill processes inside of a nested pid space.
> > There are other solutions to the problem.

> Can you elaborate? If I have 10 containers with 1000 processes each,
> it would be nice to be able to run top then kill 40 top cpu hogs....
This is exactly the reason why we allow host system to see all the 
containers/VPSs/processes.

Otherwise monitoring tools should be fixed for it, which doesn't look 
good and top/ps/kill are not the only tools in the world.
Without such functionality you can't understand whether you machine is 
underloaded or overloaded.

Kirill

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