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From: "Deniz Uğur" <deniz343@gmail.com>
To: Philippe Gerum <rpm@xenomai.org>
Cc: Xenomai <xenomai@xenomai.org>
Subject: Re: [I-PIPE][ARM64] Experimenting on Jetson Xavier
Date: Mon, 22 Feb 2021 00:44:15 +0300	[thread overview]
Message-ID: <652D6B1D-CE11-4C5B-93E5-0D02B07ABC35@gmail.com> (raw)
In-Reply-To: <871rd947az.fsf@xenomai.org>

Hi again,

So I’ve installed the evl/v5.10 on Jetson Xavier and after setting the scaling_governor to performance I got somewhat good results.

I’ve set the isolcpus=0 command line argument but latmus reports that CPU0 is not isolated. I’m not sure if that’s a bug or I’ve missed something.

Other than that I’m getting latencies between +-10us and worst latency is 73us. Even though I’ve ran latmus -t I’m still getting negative latencies. Isn’t that supposed to fix that?

evl test reports OK for everything except for scheduler-quota-accuracy and sched-tp-accuracy (no kernel support)

Are these latencies best I can get or are there anything else I can do to lower/stabilize the latencies?

Thanks.
Deniz.

> On 21 Feb 2021, at 21:14, Philippe Gerum <rpm@xenomai.org> wrote:
> 
> 
> Deniz Uğur <deniz343@gmail.com> writes:
> 
>> Hi Philippe,
>> 
>> Thank you for your reply. It’s so good to hear that Xenomai is evolving.
>> Really appreciate the work you guys are doing.
>> 
>> I would suggest to try booting the Jetson with [3] first,
>> reporting any issue to this list so we can fix them
>> 
>> I will try this ASAP and report my results under this thread.
>> I will be eagerly waiting for the arm64 version of Dovetail :)
>> 
> 
> Actually, Dovetail/arm64 has been alive and kicking for several years
> now, EVL runs it today up to the latest v5.11. What is missing is the
> Xenomai port to Dovetail/arm64, which is brewing. I'll keep you posted
> when it can be tested (within a week, I believe).
> 
> -- 
> Philippe.



  reply	other threads:[~2021-02-21 21:44 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-20 18:49 [I-PIPE][ARM64] Experimenting on Jetson Xavier Deniz Uğur
2021-02-21 16:29 ` Philippe Gerum
2021-02-21 17:35   ` Deniz Uğur
2021-02-21 18:14     ` Philippe Gerum
2021-02-21 21:44       ` Deniz Uğur [this message]
2021-02-22  7:01         ` Deniz Uğur
2021-02-22  8:39         ` Philippe Gerum
2021-02-22  9:01           ` Deniz Uğur

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