arm/arm64 ipipe performance
greg at embeddedgreg.com
Tue May 18 21:06:52 CEST 2021
On Tue, May 18, 2021 at 2:49 PM Jan Kiszka <jan.kiszka at siemens.com> wrote:
> On 18.05.21 20:28, Greg Gallagher via Xenomai 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.
> Do you mean disabling during build? Or is the issue only present when
> tracing is actively used during runtime?
> > New patches will be released this week for both arm and arm64 now that
> > the issue is understood and a work around exists.
> That's great!
> Siemens AG, T RDA IOT
> Corporate Competence Center Embedded Linux
I mean disabled during build time. That’s at least how I tested to see
that the issue went away. Hopefully I’ll have a solution soon.
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