Hi Kurt, On Wed, 10 Jun 2020 at 08:58, Kurt Kanzenbach <kurt.kanzenbach@xxxxxxxxxxxxx> wrote: > > Hi Vladimir, > > On Tue Jun 09 2020, Vladimir Oltean wrote: > > Just out of curiosity, what and how many CPU cores does your ARM64 box > > have, and what frequency are you running them at? > > Mine is a dual-core A72 machine running at 1500 MHz. > > That particular machine has a dual core Cortex A53 running at 1GHz. > > Thanks, > Kurt Ok, I just noticed that you said "v5.6*-rt*". So I re-tested that 5.4 downstream kernel again that hanged before, just applied the -rt1 patchset on top. And it's actually working fine now, no hangs, no RCU stalls, no need to reduce sched_rt_runtime_us. So maybe it's something related to the config? Thanks, -Vladimir
