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=-7.6 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A, 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 58227C433F5 for ; Fri, 10 Sep 2021 14:48:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2E15B611CC for ; Fri, 10 Sep 2021 14:48:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234087AbhIJOt1 (ORCPT ); Fri, 10 Sep 2021 10:49:27 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33328 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234184AbhIJOt0 (ORCPT ); Fri, 10 Sep 2021 10:49:26 -0400 Received: from mail-io1-xd32.google.com (mail-io1-xd32.google.com [IPv6:2607:f8b0:4864:20::d32]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 62F83C061756 for ; Fri, 10 Sep 2021 07:48:15 -0700 (PDT) Received: by mail-io1-xd32.google.com with SMTP id a15so2644896iot.2 for ; Fri, 10 Sep 2021 07:48:15 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel-dk.20150623.gappssmtp.com; s=20150623; h=subject:to:references:from:message-id:date:user-agent:mime-version :in-reply-to:content-language:content-transfer-encoding; bh=8baKku/7AG9XewMLkmq1NNzE4+nYImNwUkVNnAae6NI=; b=y8ADmvj/2zwU/4hG2VWMCCFE+qvtKbYthcnoyiXbXIMnZABI3jaKtX1UVj7Y3NmLQa Bb5jOJ6DX489XqM+uSY9IErqtobGJcf4/RjSA00LT1NhINsKJPirLZbgVvG9he68rQUR 3ju358CYyPwmE0nPr0IkT9hA/638Gin1cYlWeiQ0M4PDajgP1rKRZc655yxdByG9goP8 Ezm/fHtc2lJEiNS+m/Kqw27iujNl2HH49A9tAV+q4SsoODkmP7TADaQKMGec0XPDrt4j X3KOSzPtIPA7y+AlAl9YspgnQkyD3b83++919zu83bwuCq1k9eV4grXh36YYPWfeMSwc 8crg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:subject:to:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=8baKku/7AG9XewMLkmq1NNzE4+nYImNwUkVNnAae6NI=; b=4v3cj6TCZSRX/bqqS392Stpn1FcUHQtPR+8Vws+EKBX1oRxRfC9w4VNLyNudzeEBiQ Gu2GzTvz65wZtjrjzAvVOfzqxcwfmsZdbrzGzgrt1kfjs6ZxeVJRlJd20e3GFSzlLg6F vTu9Jp9/0C8KP85+4xCRWVx7YLOBM0Vk4OmG0/TVNq4NK8TMk0kWTsC7bdhVr2vaDGoC pOaN9cdPpvPu7GHGUROryIY17IqCTm6Uu27BK7FEGc+ve8A2I4RXnrPX1O2aI3WivcKA onU8vXH0Tcbq94rgXQsl7qB3NsDWku9P9UJw5WRBBtpS4ilfQXzJDUOSlQCaZmaYwdDr 38hA== X-Gm-Message-State: AOAM5324nPSNk7y7ERv7Fa2/v0K759jE71ILlMvbuMXB7kRVclIsbXlU RftTEH2QU1VYWEtJWNKFPGmqdwOBbw5tXQJ++sw= X-Google-Smtp-Source: ABdhPJy0q89CLNTSLfxvRq0Dhp6wEIyc9srxstylWI9WE7EVXIxAGMJSk2L5pGToeVqWKFTHMciIBg== X-Received: by 2002:a05:6602:2c05:: with SMTP id w5mr7509271iov.160.1631285294605; Fri, 10 Sep 2021 07:48:14 -0700 (PDT) Received: from [192.168.1.30] ([207.135.234.126]) by smtp.gmail.com with ESMTPSA id g23sm2489960ioc.8.2021.09.10.07.48.14 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 10 Sep 2021 07:48:14 -0700 (PDT) Subject: Re: [Non-DoD Source] Re: [PATCH] blk-mq: allow 4x BLK_MAX_REQUEST_COUNT at blk_plug for multiple_queues To: "Finlayson, James M CIV (USA)" , Song Liu , "linux-block@vger.kernel.org" , "linux-raid@vger.kernel.org" References: <20210907230338.227903-1-songliubraving@fb.com> <5EAED86C53DED2479E3E145969315A2385876DB8@UMECHPA7B.easf.csd.disa.mil> From: Jens Axboe Message-ID: <420e6629-62c4-1267-7118-229ecbf3876e@kernel.dk> Date: Fri, 10 Sep 2021 08:48:13 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <5EAED86C53DED2479E3E145969315A2385876DB8@UMECHPA7B.easf.csd.disa.mil> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-raid@vger.kernel.org On 9/10/21 8:43 AM, Finlayson, James M CIV (USA) wrote: > All, > I have a suspicion this will help my efforts increasing the IOPS > ability of mdraid in 10-12 NVMe drive per raid group situations. > > Pure neophyte question, which I apologize for in advance, how can I > test this? Does this end up in a 5.15 release candidate kernel? It's queued up to go into Linus's tree before -rc1, so should be in 5.15-rc1 for you to test. > I want to make contributions wherever I can, as I have hardware and > needs, so I can act as a performance validator within reason. I know > I can't make contributions as a developer, but I'm willing to > contribute in areas where our goals are in alignment and this appears > to be one. Testing is definitely valuable, particularly for something like this! So please do test -rc1 and report back your findings. -- Jens Axboe