On Fri, 2006-09-08 at 11:26 +0400, Pavel Emelianov wrote:
> Chandra Seetharaman wrote:
> > On Thu, 2006-09-07 at 11:29 +0400, Pavel Emelianov wrote:
> > <snip>
> >
> >
> >>>> BUT: I remind you the talks at OKS/OLS and in previous UBC discussions.
> >>>> It was noted that having a separate interfaces for CPU, I/O bandwidth
> >>>>
> >>>>
> >>> But, it will be lot simpler for the user to configure/use if they are
> >>> together. We should discuss this also.
> >>>
> >>>
> >> IMHO such unification may only imply that one syscall is used to pass
> >> configuration info into kernel.
> >> Each controller has specific configurating parameters different from the
> >> other ones. E.g. CPU controller must assign a "weight" to each group to
> >> share CPU time accordingly, but what is a "weight" for memory controller?
> >> IO may operate on "bandwidth" and it's not clear what is a "bandwidth" in
> >> Kb/sec for CPU controller and so on.
> >>
> >
> > CKRM/RG handles this by eliminating the units from the interface and
> > abstracting them to be "shares". Each resource controller converts the
> > shares to its own units and handles properly.
> >
> That's what I'm talking about - common syscall/ioct/etc and each controller
> parses its input itself. That's OK for us.
Yes, we can eliminate the "units"(KBs, cycles/ticks, pages etc.,) from
the interface and use a (unitless) number to specify the amount of
resource a resource group/container uses.
>
> [snip]
>
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--
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Chandra Seetharaman | Be careful what you choose....
- [email protected] | .......you may get it.
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