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 lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (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 8B654C3064D for ; Tue, 2 Jul 2024 07:33:09 +0000 (UTC) Authentication-Results: lists.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; secure) header.d=infradead.org header.i=@infradead.org header.a=rsa-sha256 header.s=bombadil.20210309 header.b=nxBkkv55; dkim-atps=neutral Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4WCvlS1mwzz3cfg for ; Tue, 2 Jul 2024 17:33:08 +1000 (AEST) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: lists.ozlabs.org; spf=none (no SPF record) smtp.mailfrom=bombadil.srs.infradead.org (client-ip=2607:7c80:54:3::133; helo=bombadil.infradead.org; envelope-from=batv+a6dac4ac77a4219ad85f+7618+infradead.org+hch@bombadil.srs.infradead.org; receiver=lists.ozlabs.org) Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:3::133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4WCvkX5pSNz30VP for ; Tue, 2 Jul 2024 17:32:17 +1000 (AEST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=In-Reply-To:Content-Type:MIME-Version :References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=yRJduJ4b13YGEVnBaImf8MBMoj+rPcyZfPfJ5uybrn0=; b=nxBkkv5533e0ibSUtWu/FWqca9 T02UNeMXerA742jTnmxcJDpprQYJhN+AB5mjSyF1tkFtaC9NWv/DI0JPbLwQgi37wPeed5cA37c0e +2f4q+qCCkqKwjebfWNgYqdh3KcmHS4SeimB2eXIojre3wqBiKfJ74iCTIY0nzAi/62xdvvQQ9QVV ggumCBVJg78P9RdScYdX17RSGD42SxwMGXnk/F0Te2sI20BEGRBsqQOtoGA/KEqDDyMxAk9wtOs1O z/1WMLlWsZ6latPxKW85ISPYOrT1dPDdYNH/mzAspCJntQyhFPayqTd56frrg1OjYGXYjfO03yN/a E+Zh4hIw==; Received: from hch by bombadil.infradead.org with local (Exim 4.97.1 #2 (Red Hat Linux)) id 1sOXzk-00000005s56-0D5a; Tue, 02 Jul 2024 07:32:08 +0000 Date: Tue, 2 Jul 2024 00:32:07 -0700 From: Christoph Hellwig To: Oliver Sang Subject: Re: [axboe-block:for-next] [block] 1122c0c1cc: aim7.jobs-per-min 22.6% improvement Message-ID: References: <202406250948.e0044f1d-oliver.sang@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: nvdimm@lists.linux.dev, Ulf Hansson , feng.tang@intel.com, linux-nvme@lists.infradead.org, linux-mtd@lists.infradead.org, drbd-dev@lists.linbit.com, lkp@intel.com, linux-scsi@vger.kernel.org, Christoph Hellwig , ying.huang@intel.com, xen-devel@lists.xenproject.org, dm-devel@lists.linux.dev, linux-um@lists.infradead.org, virtualization@lists.linux.dev, nbd@other.debian.org, linux-block@vger.kernel.org, linux-bcache@vger.kernel.org, Damien Le Moal , Hannes Reinecke , Jens Axboe , linux-raid@vger.kernel.org, linux-mmc@vger.kernel.org, fengwei.yin@intel.com, oe-lkp@lists.linux.dev, linuxppc-dev@lists.ozlabs.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On Mon, Jul 01, 2024 at 04:22:19PM +0800, Oliver Sang wrote: > from below, it seems the patchset doesn't introduce any performance improvement > but a regression now. is this expected? Not having the improvement at least alleviate my concerns about data integrity. I'm still curious where it comes from as it isn't exactly expected.