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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 060EBC6FD1D for ; Wed, 15 Mar 2023 13:11:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231767AbjCONK6 (ORCPT ); Wed, 15 Mar 2023 09:10:58 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56782 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231143AbjCONKw (ORCPT ); Wed, 15 Mar 2023 09:10:52 -0400 Received: from mail-pj1-x1036.google.com (mail-pj1-x1036.google.com [IPv6:2607:f8b0:4864:20::1036]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3808122002 for ; Wed, 15 Mar 2023 06:10:51 -0700 (PDT) Received: by mail-pj1-x1036.google.com with SMTP id d13so8713205pjh.0 for ; Wed, 15 Mar 2023 06:10:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; t=1678885850; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date:message-id:reply-to; bh=4iM7UqGaYvm7BzQmjPzFTbD+VCi1s05wVU7R+PFPtIQ=; b=d2XRh/0jnDbb8BJSVteBA7TvOKV8xbk6pdCqTOQcoOrShowab5iwHiCFFnz0/Pshsz vS5a48SIWacvJ8o9s8pgarz8rU7Nk6EQDTx80rj/4iNeASMVgpVtyCttdLykp0wEcbMO 9ZpYnG0Kd3+JCmpIYNaYbqk+Ms4jtktRfLBDw= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1678885850; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=4iM7UqGaYvm7BzQmjPzFTbD+VCi1s05wVU7R+PFPtIQ=; b=b5SxNGhKfq+6RPZVNu9roC+NEUsTpHt7G/ivi9SCX665fZndhPf81F38ynw28pkwkx EM1FWxIp6t5ib7mUgfD9/3EG9NZRx2fYH6x42rMuidl58AxyEQyoWn1vEtAGRj6thTDN P8Z78bdQ6AzX5QgTPfbCV+Ez4ziQ4/+OfI7MVv2XWU6O2roe6yYw8i3U+Ph6AMKMVUk/ zcMrs91D481vQ1jiQOvJiRLsHV43mHwSge3iNM2jWXdulTzNjKB0VRKg6HGUYgeagAya fVC7i/5jRFfr1QO6ZCcTfXCRz/tK7M1KYoiEyquS55xm89SCyPM1rxqf1FT+2iIosCLc cT4Q== X-Gm-Message-State: AO0yUKUHK1TuZvH7l4q/oaNHsQmg+vhYV8sd0cNFJdjizzW+pI9+a2Qj 2dsAh1vcikN4Gf30ad0MUbfb1g== X-Google-Smtp-Source: AK7set9dN3OnjgQ1zJzmAaDS5Ava8qB+TCv5SKJAmAnQ8LoY5y/PvI+b/14sPf9bRAqmxxxgI5nUMw== X-Received: by 2002:a17:902:e5d0:b0:19e:29bd:8411 with SMTP id u16-20020a170902e5d000b0019e29bd8411mr2794015plf.30.1678885850225; Wed, 15 Mar 2023 06:10:50 -0700 (PDT) Received: from google.com (KD124209188001.ppp-bb.dion.ne.jp. [124.209.188.1]) by smtp.gmail.com with ESMTPSA id d10-20020a170902854a00b001a05bc70e97sm3574903plo.189.2023.03.15.06.10.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 15 Mar 2023 06:10:49 -0700 (PDT) Date: Wed, 15 Mar 2023 22:10:43 +0900 From: Sergey Senozhatsky To: Christoph Hellwig Cc: kernel test robot , oe-lkp@lists.linux.dev, lkp@intel.com, linux-kernel@vger.kernel.org, Andrew Morton , Dan Williams , Keith Busch , Dave Jiang , Ira Weiny , Jens Axboe , Minchan Kim , Sergey Senozhatsky , Vishal Verma , linux-fsdevel@vger.kernel.org, ying.huang@intel.com, feng.tang@intel.com, zhengjun.xing@linux.intel.com, fengwei.yin@intel.com Subject: Re: [linus:master] [mpage] 7d28631786: fio.write_iops 27.8% improvement Message-ID: <20230315131043.GA1927891@google.com> References: <202303101630.ef282023-yujie.liu@intel.com> <20230315075816.GA32694@lst.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20230315075816.GA32694@lst.de> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On (23/03/15 08:58), Christoph Hellwig wrote: > > I think this simply accounts for the I/Os now that were skipped > when using the bdev_read/write path before. Oh, that would explain it. Otherwise I was slightly surprised (in a good way) and puzzled.