Hoi Peter,
On Wed, Jul 12, 2023 at 10:05 AM Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote:
> On Tue, Jul 11, 2023 at 11:39:17AM -1000, Tejun Heo wrote:
> > I wonder whether the right thing to do here is somehow scaling the threshold
> > according to the relative processing power. It's difficult to come up with a
> > threshold which works well across the latest & fastest and really tiny CPUs.
> > I'll think about it some more but if you have some ideas, please feel free
> > to suggest.
>
> We could scale by BogoMIPS I suppose, it's a bogus measurement, as per
> the name, but it does have some relation to how fast the machine is.
That's gonna fail miserably on e.g. ARM and RISC-V, where BogoMIPS
depends on some timer frequency.
R-Car M2-W with 1.5 GHz Cortex-A15: 40.00 BogoMIPS
R-Car V4H with 1.8 GHz Cortex-A76: 33.33 BogoMIPS
while the real slow 48 MHz VexRiscV gets 128 BogoMIPS.
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
