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=-2.3 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 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 3BF91C54FCF for ; Wed, 25 Mar 2020 15:25:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0B85F20409 for ; Wed, 25 Mar 2020 15:25:00 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=kernel-dk.20150623.gappssmtp.com header.i=@kernel-dk.20150623.gappssmtp.com header.b="zBYxstwL" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727895AbgCYPY7 (ORCPT ); Wed, 25 Mar 2020 11:24:59 -0400 Received: from mail-pl1-f173.google.com ([209.85.214.173]:46340 "EHLO mail-pl1-f173.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727488AbgCYPY6 (ORCPT ); Wed, 25 Mar 2020 11:24:58 -0400 Received: by mail-pl1-f173.google.com with SMTP id s23so901652plq.13 for ; Wed, 25 Mar 2020 08:24:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel-dk.20150623.gappssmtp.com; s=20150623; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=QQAboEzLhMqCZjpsHcSuxZ7/BUb3hIIZ+G5qkePrAzE=; b=zBYxstwL4i+ffT0HEDJS11qPvsxSWVTFt2G21fGIalP3jR/XKmb9kAeIZEClBCX33J QiAksvfZ19BwRmMdQsV3i5ycyjwAXJEb02enSv9UlUp0x8SDUsau7rx5nE04i304EfV9 3SoA3zjU8nojjPUg5YpcVWysN17zdTvStt2y3mamhAXLQMzd1WAKmNrcI8Gmdc3up3J7 F3B+6KYP+XFbzlTJGKowHcBg8yGmzNirBNxDTQ54yAVaMAlbkE6P/cHKslGjbxGNWwtb C2xNiBXsDM2xa+WJbQFhJMlRXET5ThRDTPrIdWc/kWSwT02jx1qdeWcEJDmIBuMSej4H sKzw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=QQAboEzLhMqCZjpsHcSuxZ7/BUb3hIIZ+G5qkePrAzE=; b=hlnjJGn+TiJVrzhQ0+cCUtU2ZXSwgo+xZ5SDo29LS20V0kE940G9TEfcfSvxDJwNRB XpE66/+TFGkLZkCxXncLHlCJH8RRj5M0H1Bp0p/uSXbUW5MX8z9BO/OwFAzlwdTCyBlY S/C8+cwsPfoz5wcMwFngz83inEaNhFv3NB8HCOluBm71XApuU5RVqwN7IpcU/HvYZf58 9Kz8rfpF0N3HBblzVoPVplRatNTXvIc+dyU/IiJo+ZoTKhys0Vqok4qMp/+mYJJTbqYP zaS5isfEszQwrUTMPehkOSnPFCqMFu2vwPQdrmG1/MdocSOwRsw2EKAmWnwyqxytnnEB veww== X-Gm-Message-State: ANhLgQ2sYw4crxcKX+MHMsJjB8thQ8zAk7D1U534x72nQwvVso2eKmFN qmq7eijBtt0e1aFoTMR99gu4Fg== X-Google-Smtp-Source: ADFU+vtn2JRR+c/ixt9VlTDZc6IWoPmEPd+gpEC2Gh6kbLAcVJK/sVLxl3XYItLDYinGgpGvtNccWQ== X-Received: by 2002:a17:90a:cb14:: with SMTP id z20mr4179718pjt.170.1585149897318; Wed, 25 Mar 2020 08:24:57 -0700 (PDT) Received: from [192.168.1.188] ([66.219.217.145]) by smtp.gmail.com with ESMTPSA id f127sm18830556pfa.9.2020.03.25.08.24.55 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 25 Mar 2020 08:24:56 -0700 (PDT) Subject: Re: 4.19 LTS high /proc/diskstats io_ticks To: "Rantala, Tommi T. (Nokia - FI/Espoo)" , "gregkh@linuxfoundation.org" Cc: "snitzer@redhat.com" , "stable@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "osandov@fb.com" , "linux-block@vger.kernel.org" , "mpatocka@redhat.com" References: <564f7f3718cdc85f841d27a358a43aee4ca239d6.camel@nokia.com> <20200325100736.GA3083079@kroah.com> <8b876ed9753478764bf5ea74d00b3d54c381b9f2.camel@nokia.com> From: Jens Axboe Message-ID: Date: Wed, 25 Mar 2020 09:24:54 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.4.1 MIME-Version: 1.0 In-Reply-To: <8b876ed9753478764bf5ea74d00b3d54c381b9f2.camel@nokia.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 3/25/20 5:22 AM, Rantala, Tommi T. (Nokia - FI/Espoo) wrote: > Based on quick looks it's solved by this, I'll need to check if it's enough > to fix it: > > commit 5b18b5a737600fd20ba2045f320d5926ebbf341a > Author: Mikulas Patocka > Date: Thu Dec 6 11:41:19 2018 -0500 > > block: delete part_round_stats and switch to less precise counting Unfortunately that has its own set of issues, which are currently being fixed just now... -- Jens Axboe