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 C1BE9E7717F for ; Fri, 13 Dec 2024 14:38:05 +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=SFDN4rcooeWA+f2GJ7sNTRa7RtJEhUi8C2zcrFBI2sI=; b=F+jVNVDkNQqnpVSfBWTrFmj7Xb O1be7vOnmRoZ4WsnqDhNe08VRqmdMdo5v30GG/uVKAURBebUOF7+m+3gOB/fv/TT2v6WKK6q72IHc kHLO9ICe3U+YuGDhCBVMuNKKhTMqhhTCZonmkRWZcChlZ2ocS+rjM/voJLocEfaxHryTL4LsvFGSw McqhwHHWpUu8a122ETxD2rPvT3hXlx2Ot0ikh/58RvSVB4laWwI0aUShF3s9xzBuZzFgN6yMRzMxX IXqyDDByWLm/3BIz6Gjq6MF3XmCd9jeQ9rMtbzLjra9P35qcsiMPF46LplD4YUGwT4/YKcdMwiiVo rC2Qj5eg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tM6nq-000000047al-0TcU; Fri, 13 Dec 2024 14:38:02 +0000 Received: from verein.lst.de ([213.95.11.211]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tM6iY-0000000459O-3dXj for linux-nvme@lists.infradead.org; Fri, 13 Dec 2024 14:32:37 +0000 Received: by verein.lst.de (Postfix, from userid 2407) id B179268AA6; Fri, 13 Dec 2024 15:32:24 +0100 (CET) Date: Fri, 13 Dec 2024 15:32:24 +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: <20241213143224.GA16111@lst.de> References: <202412122112.ca47bcec-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <202412122112.ca47bcec-lkp@intel.com> 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-20241213_063235_119284_78981EAD X-CRM114-Status: GOOD ( 11.95 ) 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 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?