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 7D9DEC2BBCA for ; Tue, 25 Jun 2024 05:01:21 +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=eHiV2nKqngvx+qALKESwFfs3axyHInXapW/4dm3TWFo=; b=DVgHgCWMSlpqFOvN6CfImJTJ+W JBe5sjLfy5h/f3JLi0bDDKan3jF3H4d7A4EGv3sPG27RxJbJFw2l9V9ac6nFg44onL57QXAiEQT6R tF5UlRnbRayA7Qb9TwkbwLSH1bHZXefxDADPz5e7RHEq6mBHByOTwCTtPTPftdT3XZeysniYo73U7 7zbZyta+v5gqIONxvuvyKey6gPlSYmMtll6MGvOTySWuzBzsZ+RAJhe1Q1FPqCkWYLBBLf0hWoQpa dxKOWL3y6CcQRhUu5GGV2hKnRZkaNEfa3/bJ5JzapllIMtu/t2RTJ+lPN15+Wox5PhJiNrRCfgg7b 43+VoqUQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1sLyIn-00000001cru-0nF1; Tue, 25 Jun 2024 05:01:09 +0000 Received: from verein.lst.de ([213.95.11.211]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1sLlUf-0000000HHuV-2E58; Mon, 24 Jun 2024 15:20:35 +0000 Received: by verein.lst.de (Postfix, from userid 2407) id AAC0B68D05; Mon, 24 Jun 2024 17:20:28 +0200 (CEST) Date: Mon, 24 Jun 2024 17:20:28 +0200 From: Christoph Hellwig To: Niklas Cassel Cc: Christoph Hellwig , kernel test robot , oe-lkp@lists.linux.dev, lkp@intel.com, Jens Axboe , Damien Le Moal , Hannes Reinecke , linux-m68k@lists.linux-m68k.org, linux-um@lists.infradead.org, linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, drbd-dev@lists.linbit.com, nbd@other.debian.org, linuxppc-dev@lists.ozlabs.org, ceph-devel@vger.kernel.org, virtualization@lists.linux.dev, xen-devel@lists.xenproject.org, linux-bcache@vger.kernel.org, dm-devel@lists.linux.dev, linux-raid@vger.kernel.org, linux-mmc@vger.kernel.org, linux-mtd@lists.infradead.org, nvdimm@lists.linux.dev, linux-nvme@lists.infradead.org, linux-s390@vger.kernel.org, linux-scsi@vger.kernel.org, ying.huang@intel.com, feng.tang@intel.com, fengwei.yin@intel.com Subject: Re: [axboe-block:for-next] [block] bd4a633b6f: fsmark.files_per_sec -64.5% regression Message-ID: <20240624152028.GA11961@lst.de> References: <202406241546.6bbd44a7-oliver.sang@intel.com> <20240624083537.GA19941@lst.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: 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-20240624_082033_752930_770476C7 X-CRM114-Status: GOOD ( 11.01 ) X-Mailman-Approved-At: Mon, 24 Jun 2024 22:01:05 -0700 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 Mon, Jun 24, 2024 at 03:45:57PM +0200, Niklas Cassel wrote: > Seems to be ATA SSD: > https://download.01.org/0day-ci/archive/20240624/202406241546.6bbd44a7-oliver.sang@intel.com/job.yaml > > ssd_partitions: "/dev/disk/by-id/ata-INTEL_SSDSC2BG012T4_BTHC428201ZX1P2OGN-part1" > > Most likely btrfs does something different depending on the nonrot flag > being set or not. (And like you are suggesting, most likely the value of > the nonrot flag is somehow different after commit bd4a633b6f) Yes, btrfs does. That's why I'm curious about the before and after, as I can't see any way how they would be set differently. Right now I can only claim with vitual AHCI devices, which claim to be rotational, though.