Re: [PATCH 1/4] Virtualization/containers: introduction

[Kirill Korotaev]

> > > I did this to the scheduler last year - see
> > > 	http://marc.theaimsgroup.com/?l=linux-kernel&m=111404726721747&w=2
> >
> > It's really interesting!
> > Have you tested fairness of your solution and it's performance overhead?
>
>
> What do you mean by fairness, exactly?
I mean how CPU time is distributed not only in the case of CPU hogs. For 
example, when 2 tasks do cyclic 1 byte transfer via pipe. one of them is 
awake, while another goes to sleep.
If both are in one container, will they behave like a CPU hog?

> As for its overhead, I just got it working inside UML.  I tried it on
> x86_64, but something was wrong with the low-level switching stuff,
> and the machine hung whenever a guest scheduler process tried to run.
> So, I never got any real measurements.
It's a pity... :( We have fair CPU scheduler in OpenVZ project, so it's 
quite an interesting approach for us.

Kirill

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