From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from vps0.lunn.ch (vps0.lunn.ch [156.67.10.101]) (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 6741E15B115; Fri, 24 Jan 2025 16:02:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=156.67.10.101 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1737734563; cv=none; b=PKhDTbeUNexePdRyDs8NwmLGALBhBIgADD9TjHnd1AEN+XRM83ykxABaG/GuUuZzLZbLSmtQMUIbszFoE6fCDgk1SbrV5Qq/Q0Mi+zPSllV34mbaXtoiCmuuq2Djg0bNOz0j8+kzWXOHOCtrK5KI/KxZVNo5GPMhU4v16BRuOn0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1737734563; c=relaxed/simple; bh=0ki71HxVvSCZSv1mIBzD69znXugceEh1G+MwysoDmbU=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=pxxGCB01/UbO6lW0rr1G8eQfMyDLQjbwyiwcFzJSEulgeyWTAnJDLaO7XDgEBRigNbxkW1oa454X4jDZwyMSlikDXXsbfujUh64271Lzx7PDC3n6o3wJv1+Uk99uOdmREQUiOvxbWRY9EKkk7bVpQLPhAXVktA5tQZV9dmFts0U= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=lunn.ch; spf=pass smtp.mailfrom=lunn.ch; dkim=pass (1024-bit key) header.d=lunn.ch header.i=@lunn.ch header.b=0toZ8F/1; arc=none smtp.client-ip=156.67.10.101 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=lunn.ch Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=lunn.ch Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=lunn.ch header.i=@lunn.ch header.b="0toZ8F/1" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lunn.ch; s=20171124; h=In-Reply-To:Content-Disposition:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:From:Sender:Reply-To:Subject: Date:Message-ID:To:Cc:MIME-Version:Content-Type:Content-Transfer-Encoding: Content-ID:Content-Description:Content-Disposition:In-Reply-To:References; bh=h62wqjEGq/7EU5tZEbQtH/JsvhXqkKnKFjv59bZ1QFA=; b=0toZ8F/1+goTt2Kbe6EwtKyzE5 mKbPFKSj59MVFKY7wCO5r2B4ghKOShuJmJWTyGYzFnVTFkdAe5QLNCoaxsP9EAl2bALsq1kHe+U3F EnikPXWJ5lFIHRkFLW5wDAHMTjX9ejNimpEi8yo0U9erpSaTKISiq8LoJBu+eghiKjiQ=; Received: from andrew by vps0.lunn.ch with local (Exim 4.94.2) (envelope-from ) id 1tbM8Z-007dvC-01; Fri, 24 Jan 2025 17:02:27 +0100 Date: Fri, 24 Jan 2025 17:02:26 +0100 From: Andrew Lunn To: Breno Leitao Cc: Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman , Jonathan Corbet , Shuah Khan , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-kselftest@vger.kernel.org, rdunlap@infradead.org, kernel-team@meta.com Subject: Re: [PATCH RFC net-next v3 0/8] netconsole: Add support for CPU population Message-ID: References: <20250124-netcon_cpu-v3-0-12a0d286ba1d@debian.org> Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250124-netcon_cpu-v3-0-12a0d286ba1d@debian.org> On Fri, Jan 24, 2025 at 07:16:39AM -0800, Breno Leitao wrote: > The current implementation of netconsole sends all log messages in > parallel, which can lead to an intermixed and interleaved output on the > receiving side. This makes it challenging to demultiplex the messages > and attribute them to their originating CPUs. > > As a result, users and developers often struggle to effectively analyze > and debug the parallel log output received through netconsole. I know very little about consoles and netconsle, so this is probably a silly question: Why is this a netconsole problem, and not a generic console problem? Can other console types also send in parallel? Do they have the same issue of intermixing? Andrew