i frequently get kernel messages of interrupts taking too long, and the perf sample rate being lowered. these messages are annoying and i’m trying to get rid of them.
in my google-fu the only likely way to do this might be to set kernel.perf_cpu_time_max_percent=0. but i cannot find any good examples of anybody actually doing this. i also cannot find any documentation that explains or dismisses any possible downsides or risks to setting it.
is it a good or stupid idea to set kernel.perf_cpu_time_max_percent=0 to get rid of “interrupt took to long” messages?