From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from relay4-d.mail.gandi.net (relay4-d.mail.gandi.net [217.70.183.196]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9B5043AB480 for ; Mon, 15 Jun 2026 08:52:46 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.70.183.196 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781513579; cv=none; b=cdh94eoLtcd0RjuLt9u6TySsS/s5lwoIwCatzE5UdyHvwpeQKRLUyGrtxIEDIKrCpT5ZHiZEzkOGWYmAbqMjKgU2iS4OofKSDVnbdGcwndJE/1S7iOcdQK/Ujqu3ujHKjRrIYffHcH3tnYoppEotVAfMisfr+x3G1p2da+99/tg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781513579; c=relaxed/simple; bh=KxR+3xwO52UlxJpj53tZgh10nngEzf/BmkeWqmom5os=; h=From:To:Cc:Subject:In-Reply-To:References:Date:Message-ID: MIME-Version:Content-Type; b=SZks6FQlXEE7ymH0fSZ+NAAoKrfWyTq00xNv82wQh42K2TcRmDyPCcMbUvvqFPwF2C4o6+cEqq72ETTWuJ5PBLTEr/WwKn5ypxWZNQnKeb/N6xdtwyUPbqdmX7HMX4osjNidyaejH4sB7eNd0XvWlvIENVoR9oVIjTaT7oeligo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=xenomai.org; spf=pass smtp.mailfrom=xenomai.org; dkim=pass (2048-bit key) header.d=xenomai.org header.i=@xenomai.org header.b=JvOrzUDn; arc=none smtp.client-ip=217.70.183.196 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=xenomai.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=xenomai.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=xenomai.org header.i=@xenomai.org header.b="JvOrzUDn" Received: by mail.gandi.net (Postfix) with ESMTPSA id 863DF3EA04; Mon, 15 Jun 2026 08:52:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=xenomai.org; s=gm1; t=1781513564; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=KxR+3xwO52UlxJpj53tZgh10nngEzf/BmkeWqmom5os=; b=JvOrzUDnpyZAFeqDK3AMDtN6n4KRKd3V8CBsiajbT1eidd9OTQ+UtH0/HTC2/rEJ2o5wP4 U+9EjguVfv1ZOoluQjIEUQrFqISO7Xq/gqrrAzWSg7otLBScfilUxJfLI9ZFgz6/UpfJUZ 91iiXuZxbHhoM9uJFakK3ljFqxjyU9Qx3B/ipO2GXRBXSamUv8MAmLPUqawtddNuzkLim2 I/S3TBx9jKRGq8PAbP3TefGnCneUWFJwNxAsdM61ZiA0J+oSZpWAyhEAdTas1UgY13MJvL a3mu5WfaMSBxEvtUXOjjmNrQaT9NL8naVQq3xohnVAOo82Av7fkIxpZeaesZZg== From: Philippe Gerum To: Jan Kiszka Cc: Tobias Schaffner , Xenomai , Quirin Gylstorff Subject: Re: Possible Xenomai 3 latency regression on arm64 In-Reply-To: <28f40baf-6a24-49f0-bf15-415e7ee6e34f@siemens.com> (Jan Kiszka's message of "Mon, 15 Jun 2026 10:33:13 +0200") References: <8ed28071-2341-4322-bedc-df1929e3a125@siemens.com> <87tsr4fe74.fsf@xenomai.org> <28f40baf-6a24-49f0-bf15-415e7ee6e34f@siemens.com> User-Agent: mu4e 1.12.12; emacs 30.2 Date: Mon, 15 Jun 2026 10:52:44 +0200 Message-ID: <87cxxsfan7.fsf@xenomai.org> Precedence: bulk X-Mailing-List: xenomai@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-GND-Sasl: rpm@xenomai.org X-GND-State: clean X-GND-Score: -100 X-GND-Cause: 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 Jan Kiszka writes: > On 15.06.26 09:35, Philippe Gerum wrote: >> Jan Kiszka writes: >>=20 >>> Hi all, >>> >>> it seems we got some >10% worst-case latency increase over the last >>> month with Xenomai head and 6.12 - that is at least the setup we use in >>> our long-running weekly test. >>> >>> Tonight, the RPi4 test triggered by exceeding the configured limit of >>> 150 =C2=B5s [1]. About half a year ago, we were in 130 =C2=B5s range wi= th it [2]. >>> x86 and beaglebone are apparently not seeing this change. >>> >>=20 >> My rpi4 fried. Is the issue visible with x4 as well? >>=20 > > We do not have long-running latency tests for x4 yet, do we, Tobias? > Ok, I can try this on an odroid c4. Did anyone succeeded in booting a mainline kernel on pi5? Last time I checked, root-over-nfs was not possible yet. --=20 Philippe.