arm/arm64 ipipe performance
Jan Kiszka
jan.kiszka at siemens.com
Tue May 18 20:49:28 CEST 2021
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!
Jan
--
Siemens AG, T RDA IOT
Corporate Competence Center Embedded Linux
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