On 20.08.2016 20:03, T. Smith wrote: > The goal is to isolate causes of indeterminism when using the PREEMPT_RT > kernel configuration with full preemption and to characterize latency and > jitter using ftrace, any recommendations?
What hardware is it ? If it's x86 it's entirely possible you are seeing SMI. Perhaps you should look into disabling those if you are on x86?