On Tue, 9 May 2023 22:48:29 +0200
luca abeni <luca.abeni@xxxxxxxxxxxxxxx> wrote:
> Hi,
>
> On Tue, 9 May 2023 15:29:21 -0400
> Vineeth Remanan Pillai <vineeth@xxxxxxxxxxxxxxx> wrote:
> [...]
> > > Is this understanding correct?
> > Yes, the above two details are correct. In addition to that, I think
> > the existing equation had a small bug:
> > GRUB paper says, running time is depreciated as
> > "dq = -U dt" where U is running_bw.
> > This is assuming that the whole cpu bandwidth could be reclaimed.
> > But in our case, we cap at Umax. So the equation should be
> > "dq = -(U/Umax) dt"
>
> Yes, this is the approximation I was mentioning... Instead of using a
> division, I approximated it with a different equation using a sum.
Sorry, ignore this comment (and the following); I misinterpreted the
code (and my old notes).
I do not understand why the "max{}" doe not work well, I need to double
think about it.
Luca
