Constant stream of PERF messages

I have a constant stream of PERF: 0/4000 [2589:2408] F=400Hz sd=6 Ex=0 messages (see picture).

How can I disable this message?
What does the message mean? F=400Hz is probably may SCHED_LOOP_RATE.
Thanks

You must have SCHED_DEBUG set

That’s it, thank you