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 X-Spam-Level: X-Spam-Status: No, score=-6.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 17A19C43381 for ; Mon, 25 Feb 2019 13:16:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E4AAA20652 for ; Mon, 25 Feb 2019 13:16:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727119AbfBYNQj (ORCPT ); Mon, 25 Feb 2019 08:16:39 -0500 Received: from syrinx.knorrie.org ([82.94.188.77]:35280 "EHLO syrinx.knorrie.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727011AbfBYNQi (ORCPT ); Mon, 25 Feb 2019 08:16:38 -0500 Received: from [10.200.4.80] (unknown [85.146.242.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by syrinx.knorrie.org (Postfix) with ESMTPSA id BE05F3B3AE6D3; Mon, 25 Feb 2019 14:16:36 +0100 (CET) Subject: Re: [PATCH 0/2] Use new incompat feature BG_TREE to hugely reduce mount time To: Qu Wenruo , Qu Wenruo , linux-btrfs@vger.kernel.org References: <20190102052945.16325-1-wqu@suse.com> <01eb72d8-73b2-049e-a6f4-37668742a2b8@knorrie.org> <79f01a1d-97b3-d7c1-91b7-01b7830b3f18@gmx.com> From: Hans van Kranenburg Openpgp: preference=signencrypt Autocrypt: addr=hans@knorrie.org; prefer-encrypt=mutual; keydata= mQINBFo2pooBEADwTBe/lrCa78zuhVkmpvuN+pXPWHkYs0LuAgJrOsOKhxLkYXn6Pn7e3xm+ ySfxwtFmqLUMPWujQYF0r5C6DteypL7XvkPP+FPVlQnDIifyEoKq8JZRPsAFt1S87QThYPC3 mjfluLUKVBP21H3ZFUGjcf+hnJSN9d9MuSQmAvtJiLbRTo5DTZZvO/SuQlmafaEQteaOswme DKRcIYj7+FokaW9n90P8agvPZJn50MCKy1D2QZwvw0g2ZMR8yUdtsX6fHTe7Ym+tHIYM3Tsg 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ngzsm553yqEjLTuWOjzdHLpE4lzD416ExCoZy7RLEHNhM1YQSI2RNs8umlDfZM9Lek1+1kgB vT3RH0/CpPJgveWV5xDOKuhD8j5l7FME+t2RWP+gyLid6dE0C7J03ir90PlTEkMEHEzyJMPt OhO05Phy+d51WPTo1VSKxhL4bsWddHLfQoXW8RQ388Q69JG4m+JhNH/XvWe3aQFpYP+GZuzO hkMez0lHCaVOOLBSKHkAHh9i0/pH+/3hfEa4NsoHCpyy Message-ID: Date: Mon, 25 Feb 2019 14:16:36 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.5.0 MIME-Version: 1.0 In-Reply-To: <79f01a1d-97b3-d7c1-91b7-01b7830b3f18@gmx.com> Content-Type: text/plain; charset=utf-8 Content-Language: en_US Content-Transfer-Encoding: 8bit Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org On 2/25/19 2:10 PM, Qu Wenruo wrote: > > > On 2019/2/25 下午9:02, Hans van Kranenburg wrote: >> Hi Qu, >> >> On 1/2/19 6:29 AM, Qu Wenruo wrote: >>> This patchset can be fetched from: >>> https://github.com/adam900710/linux/tree/bg_tree >>> Which is based on v4.20-rc1 tag. >>> >>> This patchset will hugely reduce mount time of large fs by putting all >>> block group items into its own tree. >> >> I'm going to test this. >> >> Is there some specific command you'd like me to use to produce results >> for benchmarks? > > Nope. If I provides some commands, those must be super beneficial for > BG_TREE. Ah, I meant, to produce output for the mount timings, like your 'ftrace function graph'. > So just use whatever you like, near real world use case would be more > appreciated. Hans