Excerpts from Steven Rostedt's message of June 30, 2020 8:16 am: > On Thu, 25 Jun 2020 15:34:03 +1000 > Nicholas Piggin <npig...@gmail.com> wrote: > >> Batch these up so we disable all the per-cpu buffers first, then >> synchronize_rcu() once, then reset each of the buffers. This brings >> the time down to about 0.5s. > > After applying this patch, running tools/testing/selftests/ftracetest > went from 5 minutes and 35 seconds to 5 minutes 5 seconds to complete > on my 4 core (8 with hyperthreading) machine! That's almost a 10% drop! > > Thanks, I'm definitely applying this for the next merge window.
Cool, always good when a big system optimisation helps small ones as well. Thanks all. Thanks, Nick
