On 2020-10-27 11:25:47 [+0100], Daniel Wagner wrote: > Well, one thing I need to figure out is how to get pi_stress working > correctly on my machines (that is for all -rt trees, so it's nothing > new). It consistently triggers RCU stall warnings with hackbench as > workload. Clark told me the test only works if there are enough CPUs to > run on. Need to look into it. Is it running as a RT task? Do you have RCU-boosting enabled? Otherwise it looks that if you throw enough non-RT load on the system, RCU can not catch up which does not sound good. Sebastian
