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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B5665C001DC for ; Wed, 19 Jul 2023 06:43:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231205AbjGSGnG (ORCPT ); Wed, 19 Jul 2023 02:43:06 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34340 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231159AbjGSGnC (ORCPT ); Wed, 19 Jul 2023 02:43:02 -0400 Received: from mail.lichtvoll.de (luna.lichtvoll.de [194.150.191.11]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 642451BF3 for ; Tue, 18 Jul 2023 23:43:01 -0700 (PDT) Received: from 127.0.0.1 (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (secp384r1) server-digest SHA384) (No client certificate requested) by mail.lichtvoll.de (Postfix) with ESMTPSA id D86EF7478E3; Wed, 19 Jul 2023 08:42:58 +0200 (CEST) Authentication-Results: mail.lichtvoll.de; auth=pass smtp.auth=martin smtp.mailfrom=martin@lichtvoll.de From: Martin Steigerwald To: Tim Cuthbertson , linux-btrfs@vger.kernel.org, Linux regressions mailing list Cc: Linux kernel regressions list Subject: Re: Scrub of my nvme SSD has slowed by about 2/3 Date: Wed, 19 Jul 2023 08:42:58 +0200 Message-ID: <3526703.iIbC2pHGDl@lichtvoll.de> In-Reply-To: <1d611dbb-8aee-9a6e-701c-6498f1b51c34@leemhuis.info> References: <1d611dbb-8aee-9a6e-701c-6498f1b51c34@leemhuis.info> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org Hi Thorsten. #regzbot monitor: https://lore.kernel.org/linux-btrfs/cover.1689744163.git.wqu@suse.com/ I hope that does it. Above links to a patch of Qu about asking for other ideas to fix the regression. It however has been superseded by a later patch of him. So feel free to drop this. Best, Martin Linux regression tracking #adding (Thorsten Leemhuis) - 12.07.23, 13:02:18 CEST: > [CCing the regression list, as it should be in the loop for > regressions: > https://docs.kernel.org/admin-guide/reporting-regressions.html] > > [TLDR: I'm adding this report to the list of tracked Linux kernel > regressions; the text you find below is based on a few templates > paragraphs you might have encountered already in similar form. > See link in footer if these mails annoy you.] > > On 03.07.23 22:19, Tim Cuthbertson wrote: > > Yesterday, I noticed that a scrub of my main system filesystem has > > slowed from about 2.9 gb/sec to about 949 mb/sec. My scrub used to > > run in about 12 seconds, now it is taking 51 seconds. I had just > > installed Linux kernel 6.4.1 on Arch Linux, upgrading from 6.3.9. > > At first I suspected the new kernel, but now I am not so sure. > > Thanks for the report. It seems it will take some work to address > this, so to be sure the issue doesn't fall through the cracks > unnoticed, I'm adding it to regzbot, the Linux kernel regression > tracking bot: > > #regzbot ^introduced e02ee89baa66 > #regzbot title btrfs: scrub nvme SSD has slowed by about 2/3 due to > csum #regzbot monitor: > https://lore.kernel.org/all/6c1ffe48e93fee9aa975ecc22dc2e7a1f3d7a0de.1 > 688539673.git.wqu@suse.com/ #regzbot ignore-activity > > This isn't a regression? This issue or a fix for it are already > discussed somewhere else? It was fixed already? You want to clarify > when the regression started to happen? Or point out I got the title > or something else totally wrong? Then just reply and tell me -- > ideally while also telling regzbot about it, as explained by the page > listed in the footer of this mail. > > Developers: When fixing the issue, remember to add 'Link:' tags > pointing to the report (the parent of this mail). See page linked in > footer for details. > > Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' > hat) -- > Everything you wanna know about Linux kernel regression tracking: > https://linux-regtracking.leemhuis.info/about/#tldr > That page also explains what to do if mails like this annoy you. -- Martin