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 13E03C3064D for ; Tue, 2 Jul 2024 07:32:11 +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=yRJduJ4b13YGEVnBaImf8MBMoj+rPcyZfPfJ5uybrn0=; b=4ws0KXcned3Dn8ILOlsqqG8c8M Y0S+/LT4TxsYhnoFJnEOAExQrwBUL+v1L/+LMwv0fBG/RXx7YPaqio5cFe9cDVWNOZ76gBHOQ2ha1 CiBcnNiTzy9xJGknZd0HoYBHg6soCqB5OtFfNQWuyEAzTSx5IjVSvk8vPwy6Zz1piIRSzeIUdwQq1 8Zt6oTxqiLCcae0mKolYzZwvuyv9SJmgFeb+gOywI94CTWk0f5lq18FvvSC2jSM9PIo2cXbJDEDx6 gG9NTkSl6UwCyCqHsSgRcIEBwYfv65CXQm/gIWFLTJCuCmXhfXD46S8kCusJdRosi0NkMaPXaKiiu duFRelxg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1sOXzm-00000005s6H-2smR; Tue, 02 Jul 2024 07:32:10 +0000 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 Cc: Christoph Hellwig , oe-lkp@lists.linux.dev, lkp@intel.com, Jens Axboe , Ulf Hansson , Damien Le Moal , Hannes Reinecke , linux-block@vger.kernel.org, linux-um@lists.infradead.org, drbd-dev@lists.linbit.com, nbd@other.debian.org, linuxppc-dev@lists.ozlabs.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-scsi@vger.kernel.org, ying.huang@intel.com, feng.tang@intel.com, fengwei.yin@intel.com 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-BeenThere: linux-um@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-um" Errors-To: linux-um-bounces+linux-um=archiver.kernel.org@lists.infradead.org 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.