On Sat, Jan 25, 2020 at 11:48:46AM -0800, Paul E. McKenney wrote: > My guess is "no" because the real-time application would not yet be > running during boot. On the other hand, if this issue is due not so much > to boot, but to (say) expensive filesystem operations on large systems, > that might be a different story. Possible - that warn happened around a btrfs init-something. > Except that I would have hard questions to ask of someone doing expensive > filesystem operations while their deep-sub-millisecond real-time > application was running. So even then, I doubt that they would care. > > Again, if I am wrong about this, this would be an excellent time for > them to let me know. I can see the hint there. :-) > In the meantime, one question... Are you testing for realtime suitability > on your big box? If so, to what extent? Nah, just boot-testing tip/master before the merge window opens. Got a couple of boxes on which I throw tip/master on from time to time and see what breaks. I have caught a number of issues in past years, so it is a useful exercise. > Aside from habitually failing to trim emails, which of these was I > violating? ;-) That's my mail signature. In the hope that people see that doc and stop doing the same annoying things on LKML, it gets pasted in every mail of mine. I didn't mean you or your mail. :-) -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette