Re: [Xen-devel] [PATCH v1 1/4] xen: add real time scheduler rt

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 28.08.14 at 18:06, <xumengpanda@xxxxxxxxx> wrote:
> âAs to your concern "I still don't see why such wouldn't be
> applicable uniformly to all schedulers."â, are you suggesting that the
> credit and credit2 scheduler could also allow users to set/get each VCPU's
> parameters? (I think that could be possible but this should be some design
> decision made by credit and credit2 scheduler developer?)

Perhaps. But I think a more uniform interface to the individual
schedulers would help on the tools side too. But in the end I'm
just raising questions/concerns here, it's George who needs to
be okay with your approach.

>> I think anything going into the seconds, not to speak of minutes or
>> hours, range is already beyond boundaries of being reasonable /
>> useful.
> 
> âHmm, that's fair. If we want to limit the range to seconds, then uint32 is
> enough. However, what if some user really want to set the period/budget to
> hours/days? Then we couldn't support it if we use uint32 type for
> period/budget. (This is just my subtle concern. I'm not arguing that we
> have to use uint64 or uint32. As long as everyone agrees with a type, I can
> just change it to the agreed type very quickly.) Do you have any suggestion
> of how we can reach an agreement and get the range finalized? â

Let's see what others, mainly George and Dario, think.

Jan

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