From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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.lore.kernel.org (Postfix) with ESMTPS id 595C7E7716A for ; Tue, 17 Dec 2024 04:55:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=o2Z5OjJLokTSHIzUIAeDV6YXJISE2TdfyCbqEP4/txI=; b=sXaObgdInNZ1g5wqocn3CBFHCu +e74jxyvyRZ5TOUhfJwP3lT8LhxXa+MFuOXhQ115yCcjYoxZ2ANh5p7t7rmfnRI9zdt4jVdiIe8g4 Emat98lH44c3C7znDZe/wrJFOqrAoVVDv7FUW+x1ngjacStcH1BwNe6euWuquTMP/L2ZM1dpMr4u3 KOfEFxyX48IKNOriZ2cq1zzGv3TRlfHgVP1MLMXkMN+z1euiJtq9ere27msEMn9NiH+Z06y6MqjMQ z55zvw6Xvu6d1uPaTE3GT46HxCimRwhjfNXuYjm7h9CutFSFykqNzJi5Y/qCHT8rvvujK3iL3vtbc OCnRDgeA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tNPcO-0000000CBW3-2egR; Tue, 17 Dec 2024 04:55:36 +0000 Received: from verein.lst.de ([213.95.11.211]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tNPcL-0000000CBVZ-3cKY for linux-nvme@lists.infradead.org; Tue, 17 Dec 2024 04:55:35 +0000 Received: by verein.lst.de (Postfix, from userid 2407) id 6443968BEB; Tue, 17 Dec 2024 05:55:28 +0100 (CET) Date: Tue, 17 Dec 2024 05:55:28 +0100 From: Christoph Hellwig To: kernel test robot Cc: Christoph Hellwig , oe-lkp@lists.linux.dev, lkp@intel.com, linux-kernel@vger.kernel.org, Jens Axboe , linux-block@vger.kernel.org, virtualization@lists.linux.dev, linux-nvme@lists.infradead.org Subject: Re: [linus:master] [block] e70c301fae: stress-ng.aiol.ops_per_sec 49.6% regression Message-ID: <20241217045527.GA16091@lst.de> References: <202412122112.ca47bcec-lkp@intel.com> <20241213143224.GA16111@lst.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20241213143224.GA16111@lst.de> User-Agent: Mutt/1.5.17 (2007-11-01) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241216_205534_049897_2FEA0C3C X-CRM114-Status: GOOD ( 16.03 ) X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org On Fri, Dec 13, 2024 at 03:32:24PM +0100, Christoph Hellwig wrote: > On Thu, Dec 12, 2024 at 09:51:45PM +0800, kernel test robot wrote: > > > > > > Hello, > > > > kernel test robot noticed a 49.6% regression of stress-ng.aiol.ops_per_sec on: > > This sounds like there is some other I/O path that still reorders, > which got messed up. What storage driver is this using? The repro > material talks about an ata disk, but I'm still curious if it's ahci > or some other driver, or a SAS HBA? Do you have the information on what hardware is used for this test?