On Tue, May 25, 2021 at 6:43 AM liandao <lian...@gmail.com> wrote: > hi greg gallagher, > is this mean:the ipipe-core-5.4.119-arm64-2 released on 5/23 also > should turn off ftrace when config kernel? > > On 5/19/21, Greg Gallagher via Xenomai <xenomai@xenomai.org> wrote: > > Hi Everyone, > > There's been a noticeable slow down in the arm and arm64 latency of > > late. I tracked the issue > > down to the tracing infrastructure. For now if you hit this issue, > > disable ftrace. Once this is done the latency numbers look much better. > > I'm currently working on resolving the issue. > > > > New patches will be released this week for both arm and arm64 now that > > the issue is understood and a work around exists. > > > > Thanks > > > > Greg > >
Yes the same for arm64. I believe I’ve found the issue but for this release ftrace should not be included in the build to get optimal performance. Thanks Greg > >
