From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 2EE5440BFD; Tue, 20 Feb 2024 23:43:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.137.202.133 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708472624; cv=none; b=Uts6cjN+ZcDCYbTvYSUxnb5CqM7rrN3rb1coyyg7/gzB7JNbuim8vfQJcVNiHWB8AEqZxnW4oJjBQN6oRRNArj+tO39yUGM8u9g0N63CICQBgegnAWye6Jdp9ZHOGpQhJX568d0MDwObGVmIE1C0vg2DSrsPcF+qpqQVmdEjGS8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708472624; c=relaxed/simple; bh=VazGMhJSTvkwFrahEoUGy3nRCIbT6OF0OS3vNCyiu6I=; h=Message-ID:Date:MIME-Version:Subject:From:To:Cc:References: In-Reply-To:Content-Type; b=GQ8spNbvbvqKgPeGgg/KBdlFeE8wN4CQvMF1okuYXSQV9m6YHHgLX6yQcFi++M4q2BVa5gzL1X4lt/XaPJ2asLnhZI6WkRqNQvE5/s/Ca7xKjC3J8U3JnW/+rAc2nsPYwjIvc2QNx239TYiK0gM0qH/U1jfJ+ccBozeME5FAOCs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org; spf=none smtp.mailfrom=infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=A8vUMgrM; arc=none smtp.client-ip=198.137.202.133 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="A8vUMgrM" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=Content-Transfer-Encoding: Content-Type:In-Reply-To:References:Cc:To:From:Subject:MIME-Version:Date: Message-ID:Sender:Reply-To:Content-ID:Content-Description; bh=x9Dw4MMF3VS5sGivOkHB9gl6mDFzLtT5Gcu7DU0nXrQ=; b=A8vUMgrM4eMxWlxhvLYm/CX4Do ZOfr4rSfAmNGZfDfoqzcfcTFj9oi/z2WE7OBtJpds9ib4IuJdMCLqLasIOyoKsWZ5XInON/Y52lr7 kdxV+PCh6l2VpNVbN0jhqCvrT3wZq6p5QBwaxS00RoIg4e6SZagyjJcz/0PDk5lFEh5XoBSGPR1X9 4cfZYX7I2sbO09tg79kiMm7VPB9UDVno3Ff5yqV+ZR6nRLVPxhpsCOS8vgT6Mow74wXcxeVrD+4XO /9L8iSGBHjG+mekRL0XPhp+nOLX4RHka1QjobbqUOVYoKWzTdqZkDek2a/RUpgae77CxLnVQxgEWY ppn8k8Aw==; Received: from [50.53.50.0] (helo=[192.168.254.15]) by bombadil.infradead.org with esmtpsa (Exim 4.97.1 #2 (Red Hat Linux)) id 1rcZm2-0000000GXFj-1oxN; Tue, 20 Feb 2024 23:43:42 +0000 Message-ID: <10487018-49b8-4b27-98a1-07cee732290d@infradead.org> Date: Tue, 20 Feb 2024 15:43:41 -0800 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: =?UTF-8?Q?Re=3A_This_is_the_fourth_time_I=E2=80=99ve_tried_to_find_?= =?UTF-8?Q?what_led_to_the_regression_of_outgoing_network_speed_and_each_tim?= =?UTF-8?Q?e_I_find_the_merge_commit_8c94ccc7cd691472461448f98e2372c75849406?= =?UTF-8?Q?c?= Content-Language: en-US From: Randy Dunlap To: Mikhail Gavrilov , Mathias Nyman , Thomas Gleixner Cc: "Christian A. Ehrhardt" , niklas.neronin@linux.intel.com, Linux List Kernel Mailing , Greg KH , linux-usb@vger.kernel.org, linux-x86_64@vger.kernel.org, netdev@vger.kernel.org References: <2d87509a-1515-520c-4b9e-bba4cd4fa2c6@linux.intel.com> <1126ed0a-bfc1-a752-1b5e-f1339d7a8aa5@linux.intel.com> <34d7ab1b-ab12-489d-a480-5e6ccc41bfc3@infradead.org> In-Reply-To: <34d7ab1b-ab12-489d-a480-5e6ccc41bfc3@infradead.org> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit On 2/20/24 15:41, Randy Dunlap wrote: > {+ tglx] (this time for real) > > On 2/20/24 15:19, Mikhail Gavrilov wrote: >> On Mon, Feb 19, 2024 at 2:41 PM Mikhail Gavrilov >> wrote: >>> >>> I installed irqbalance daemon and nothing changed. >>> So who is responsible for irq balancing? >> >> Sorry for the noise. Can anyone give me an answer? >> Who is responsible for distributing interrupts in Linux? >> I spotted network performance regression and it turned out, this was >> due to the network card getting other interrupt. It is a side effect >> of commit 57e153dfd0e7a080373fe5853c5609443d97fa5a. > > That's a merge commit (AFAIK, maybe not so much). The commit in mainline is: > > commit f977f4c9301c > Author: Niklas Neronin > Date: Fri Dec 1 17:06:40 2023 +0200 > > xhci: add handler for only one interrupt line > >> Installing irqbalance daemon did not help. Maybe someone experienced >> such a problem? >> > > Thomas, would you look at this, please? > > A network device and xhci (USB) driver are now sharing interrupts. > This causes a large performance decrease for the networking device. > > The thread begins here: > https://lore.kernel.org/lkml/CABXGCsNnUfCCYVSb_-j-a-cAdONu1r6Fe8p2OtQ5op_wskOfpw@mail.gmail.com/ > > > motherboard: > "My motherboard is MPG-B650I-EDGE-WIFI looks like it is related to the > mentioned commit. > https://www.msi.com/Motherboard/MPG-B650I-EDGE-WIFI" > > network device: > Network: RTL8125 2.5GbE Controller (rev 05) > > > thanks. -- #Randy