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=-6.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no 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 7BE13C43461 for ; Tue, 15 Sep 2020 18:33:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3B82E20732 for ; Tue, 15 Sep 2020 18:33:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1600194785; bh=HDJXJFdMNd6kivbusz8fq34btFa76pzqswyRTgcdF0k=; h=References:In-Reply-To:From:Date:Subject:To:Cc:List-ID:From; b=VBejBp2VQ3oiU13IPY0nZd5b2plIMf9tT99R5WWVClxr7FmqWB6hqisbMA0rYBax6 rmOCMRPEM845ZzZt1dFD4ioUb4D3sP6NyE0gv0lZn6MMpCDyt/Z4mmK6hqeYATioO7 VxZE1/25LPTbAwjyT/5GueiUuBSckznHTsBOWVGU= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727865AbgIOSco (ORCPT ); Tue, 15 Sep 2020 14:32:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43862 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727872AbgIOSbm (ORCPT ); Tue, 15 Sep 2020 14:31:42 -0400 Received: from mail-lj1-x241.google.com (mail-lj1-x241.google.com [IPv6:2a00:1450:4864:20::241]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A2F5BC061788 for ; Tue, 15 Sep 2020 11:31:41 -0700 (PDT) Received: by mail-lj1-x241.google.com with SMTP id k25so3684276ljg.9 for ; Tue, 15 Sep 2020 11:31:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=Dfn+wAryn8C6DCMRnpMqu5m74tYawQDjyF9URZVbit4=; b=KytikPFX2ltfGBuVNpKqIMWZkBuq7chmhFwJK4wg3F9rWrqDBv7uB9WDavsBoHoyUE wj2KWBLT+0RefUd1HoTSg6Ue4AUM1cNQKEd6Nhs7R6AeUsgwnk/hSGaz84Tr764/Q66H b+egq4Eo3V9tr9aRJcHnwjPJozP0YCOTZxh3k= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=Dfn+wAryn8C6DCMRnpMqu5m74tYawQDjyF9URZVbit4=; b=Kq1HVpK9MLTJqLhMiUAnhTfAKL+6dE8i3mOEE0396nQ19/eGO3i97YxxbUnI0Y/C4a 2UeqxTD2xDkRIvUeu0Q3F9jmVhNBg+3ugKstsvX0rVVsR6xwT+gIEVOswTDQx5sx5S2s kBaiwVb3ily/4NRxuxO+HDrwiksko9JSj3jWhTQnFO2a/xHmw+6CvFPMEiGK+OUdsOq1 Mf/GlxZKFmlNQAInsALGS7bLtI6ZHwzDhNU59ye5ioKDL6zX2aC2qnN3pDseYA5zvtZ7 2L/DlRz5a7x/MxmSaPWPKzPDZn9A2kbU7hVxZKSIxgJD43ho6I36jqWbQ5sPtJXvOmO/ aFAg== X-Gm-Message-State: AOAM531h5ZEiFkUiW6NjNF5Zs4j2vVGpr0zJanf8joaMOGQCxCK7uy53 LbwcziUewTTWELSCz6LJA94b0sl5WucdOQ== X-Google-Smtp-Source: ABdhPJzYLHs1AqJaJrg6jnorUo1yzm7ToGoHCxBwMIjwWHPEbsGXPPowLOE7PYulznj3P3uyMr4QAg== X-Received: by 2002:a2e:9755:: with SMTP id f21mr7710807ljj.50.1600194699651; Tue, 15 Sep 2020 11:31:39 -0700 (PDT) Received: from mail-lj1-f174.google.com (mail-lj1-f174.google.com. [209.85.208.174]) by smtp.gmail.com with ESMTPSA id u17sm4478635lfi.2.2020.09.15.11.31.38 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 15 Sep 2020 11:31:38 -0700 (PDT) Received: by mail-lj1-f174.google.com with SMTP id k25so3749586ljk.0 for ; Tue, 15 Sep 2020 11:31:38 -0700 (PDT) X-Received: by 2002:a05:651c:104c:: with SMTP id x12mr7823371ljm.285.1600194698099; Tue, 15 Sep 2020 11:31:38 -0700 (PDT) MIME-Version: 1.0 References: <8bb582d2-2841-94eb-8862-91d1225d5ebc@MichaelLarabel.com> <0cbc959e-1b8d-8d7e-1dc6-672cf5b3899a@MichaelLarabel.com> <0daf6ae6-422c-dd46-f85a-e83f6e1d1113@MichaelLarabel.com> <20200912143704.GB6583@casper.infradead.org> <658ae026-32d9-0a25-5a59-9c510d6898d5@MichaelLarabel.com> <9550725a-2d3f-fa35-1410-cae912e128b9@tessares.net> In-Reply-To: <9550725a-2d3f-fa35-1410-cae912e128b9@tessares.net> From: Linus Torvalds Date: Tue, 15 Sep 2020 11:31:21 -0700 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: Kernel Benchmarking To: Matthieu Baerts Cc: Michael Larabel , Matthew Wilcox , Amir Goldstein , "Ted Ts'o" , Andreas Dilger , Ext4 Developers List , Jan Kara , linux-fsdevel Content-Type: text/plain; charset="UTF-8" Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org On Tue, Sep 15, 2020 at 8:34 AM Matthieu Baerts wrote: > > One more thing, only when I have the issue, I can also see this kernel > message that seems clearly linked: > > [ 7.198259] sched: RT throttling activated Hmm. It does seem like this might be related and a clue, but you'd have to ask the RT folks what the likely cause is and how to debug things.. Not my area. Linus