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 100A7C001DD for ; Thu, 13 Jul 2023 16:44:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235022AbjGMQog (ORCPT ); Thu, 13 Jul 2023 12:44:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55972 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232786AbjGMQod (ORCPT ); Thu, 13 Jul 2023 12:44:33 -0400 Received: from mail-qt1-x830.google.com (mail-qt1-x830.google.com [IPv6:2607:f8b0:4864:20::830]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 35CF51BF8; Thu, 13 Jul 2023 09:44:33 -0700 (PDT) Received: by mail-qt1-x830.google.com with SMTP id d75a77b69052e-40348601753so7202981cf.2; Thu, 13 Jul 2023 09:44:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1689266672; x=1691858672; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=iXdwFHfILmXMZPqzWaKgPH+49WO2TT1+7RbodHVq2ig=; b=lAsanCKgYX9/LrkCcZmfsuVUp9yBivSH9AYIAc5OtE+Pa8EUJU9rJ4+ylyUdBSytbw l/qi8b6R1YR8G3ttDAx4VXC83nBd+Q6tiRGP2IMRNOPSoyIvTy6E580eTv1xSWlJsOas kViBOx1nXGB4lqOt5cdHXUX7vCT3PvUTYxMl3YFQYgHoaX2W9U6VppF9KuDUTpUgle02 F1x50O2CylmGo5GquV6IAaTD/soXghYCN/ey8iLTQgsg5JyAg0DGWflX3YHAO/301as8 qYBJtU6EmwaxdNF+vWGCUMRZULMFBDBbu4wQRt6i+H8pAs/IAEFDh9xiT36xuspXO/oU BQJQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1689266672; x=1691858672; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=iXdwFHfILmXMZPqzWaKgPH+49WO2TT1+7RbodHVq2ig=; b=cRRG4crXJtNT8Nv5p2Ed9bqnptzK9+LMLUoZ5ZL64aCrwrsS8BHxzcLYWjVAJ8vsjd F7qeeym20GAr2t6DhFL15b9vrXhGhD+eNqakt52z88+/EhSYydcDfQkhqMglrA/aOGEu SnSiGps9GGTsJFQfQLd2/NFM0hv+35JMzIZTVf6in8L81QZhsz3/WRqNk/54ef4kIdtn pdVrGrq7hYGyrA1pDiv3xVM6zOTGeO7LGDHOYXi79mpmEwV0N5+YquBWq+R+iDLkUbC4 wksRpYGUeKVX7dnlNynudEEAYKeQJWLeppQUy3RvcVx9s9t0UIVl+W+CY6kS7rTxZ+7D EGIw== X-Gm-Message-State: ABy/qLZTEMm+S5SQAFIoJQzWIMH3gLn91M5whFrjBc7D9SNjGRIw/sNX I9sA14XJ4ZIa2O5PiG53Tp0h+UI47aP+vA== X-Google-Smtp-Source: APBJJlGh8sojoadtyZOdE3HwKq4LsQ8SvIBCGgq7FqeYfvWkzMCjQiUBgtKJ4LpiR/WDpqhGTfmtCQ== X-Received: by 2002:a05:622a:1752:b0:403:b112:1176 with SMTP id l18-20020a05622a175200b00403b1121176mr2644978qtk.37.1689266672109; Thu, 13 Jul 2023 09:44:32 -0700 (PDT) Received: from [192.168.1.208] (pool-173-79-40-147.washdc.fios.verizon.net. [173.79.40.147]) by smtp.gmail.com with ESMTPSA id ay14-20020a05622a228e00b003f9e58afea6sm3203398qtb.12.2023.07.13.09.44.31 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 13 Jul 2023 09:44:31 -0700 (PDT) Message-ID: <3cdbddeb-bab9-789e-d9bc-8358dc5a635e@gmail.com> Date: Thu, 13 Jul 2023 12:44:31 -0400 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.12.0 Subject: Re: Question about the 'bw' field in the fio output Content-Language: en-US To: richard clark , fio@vger.kernel.org Cc: linux-kernel@vger.kernel.org References: From: Vincent Fu In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 7/13/23 11:43, richard clark wrote: > Hi, > > I found that sometimes the fio command will have an additional 'bw' > field as below: > ... > clat percentiles (usec): > | 1.00th=[. 51]... > bw ( KiB/s): min=45689, max=49753, per=100.00%, avg=49658.56, > stdev=89.23, samples =5 > iops : min=..... > ... > > Please there is a line beginning with 'bw ( KiB/s)...', but sometimes > the 'bw' line doesn't show, does anybody know the reasons? > > Thanks. See: https://lore.kernel.org/fio/7b2f76ca-42bb-dc73-dd07-2cc79729ecb0@gmail.com/T/#t https://github.com/vincentkfu/fio-blog/wiki/Periodic-performance-measurements