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From: Greg Gallagher <greg@embeddedgreg.com>
To: "Xenomai@xenomai.org" <xenomai@xenomai.org>
Subject: arm/arm64 ipipe performance
Date: Tue, 18 May 2021 14:28:15 -0400	[thread overview]
Message-ID: <CALLqZ8SWfJqE64RfNfK-OXcj0mdWnU+5tTT9ABmMa-rz9QHZnA@mail.gmail.com> (raw)

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

             reply	other threads:[~2021-05-18 18:28 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-18 18:28 Greg Gallagher [this message]
2021-05-18 18:49 ` arm/arm64 ipipe performance Jan Kiszka
2021-05-18 19:06   ` Greg Gallagher
2021-05-20 19:14     ` Robert Berger
2021-05-25 10:43 ` liandao
2021-05-25 13:21   ` Greg Gallagher

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