On Thu, Dec 28, 2017 at 10:36 AM, Kai <[email protected]> wrote: > Hardware: cubieboard2 & cubietruck > OS: archlinux with mainline kernel 4.12.x/4.13.x/4.14.x > SoC: A20 > > Issue desc: performance sensitive apps run stuttered comparing to they > behave on 4.11.x, top shows "kworker" always kills 6~13% CPU time. > Prior to 4.12.0, "kworker" never stays more than 0.1%. > > I see in some forums, more than one reported this, not only on cubieboards > but also Banana Pi, with A20 SoC too. > Can't confirm if it affects to other SoC e.g. H3.
Do you have SUN4I_GPADC enabled? AFAIK its interrupt handler busy loops, which might be what you are seeing. ChenYu -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
