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=-0.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=unavailable 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 1F873C48BD4 for ; Tue, 25 Jun 2019 15:35:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id EC5962080C for ; Tue, 25 Jun 2019 15:35:52 +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="fSZ1jmOB" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731170AbfFYPfv (ORCPT ); Tue, 25 Jun 2019 11:35:51 -0400 Received: from mail-io1-f67.google.com ([209.85.166.67]:42674 "EHLO mail-io1-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730385AbfFYPfv (ORCPT ); Tue, 25 Jun 2019 11:35:51 -0400 Received: by mail-io1-f67.google.com with SMTP id u19so127066ior.9 for ; Tue, 25 Jun 2019 08:35:50 -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=C5Kpn1C2A5jgZ8AFuH6hqrMkM0/wspbadULz7ANuDkc=; b=fSZ1jmOBJDmVgiy8YfQHhRU3T2PMNMqwPx7zsH/PNoPFZIjhbZ/Q+3NJiR5UaQQLTI zOC0A/ejk/zWNRdpYSY3qNcN/Uer8vGO6NzA5z19kQ7P8z79VNumzjwtR8V7dZ6kHpLk cmIt0h9Wb398E9nAKv04fNALH1i6+uyqNmTAPAFcXMbaYsgJ51GE5J5GDSUwiB1TQ4vX Et1prOY8ebWzZn8int4Sqbd+Grg/WeWaBbe7ORML20Vi3+lKpoRL6QW3FnF5MmSZbRyH joP+mRpllMVv8Tur+RohKtzrBlYXqmerR2DGriJIonl1J4OGFVDQ7RcfQmmAd8UzfiEk DStw== 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=C5Kpn1C2A5jgZ8AFuH6hqrMkM0/wspbadULz7ANuDkc=; b=FPNgV8pGFk/fpVwNkYtlzDKvgt8g2NWUAEr/COGiSKrtQfLo5q2uk65085OYC96zUq Sm+If6RaM635N4DvDY05ILyncE1gNCiAeHwfzw4m5lVWDcBN5bIcj3DiCmhcuckJ6cfk kBkRmBs/jAjcrjJho2C9aPYlG28PpIYmEZL2xvhqVb/ihbF6WkCcGqMaKCzuteB5u1P4 OL/ZEdR/T3efKH1bAbi6/DGASVT3SO9/oUdxcaOf3p8gKX7lnhviIQE2vYGNJDlQzigV aJ5fHwIx8jl0cQkwpBFj/Rg81PzcRmhHn0oPv+EkcvIdGSI8PhvcYHbPd2cEdVrEyNII Qt/w== X-Gm-Message-State: APjAAAX+E4O/gyO2j8zqwPnSPSG+6cYR1GzGFb4+/Mz1SAAndcHERtVp pnEfOYJeHku0L1D9vquj/XjMSw== X-Google-Smtp-Source: APXvYqwlOX3MGQUkXeLTHvnZA+tkOGuGTrFv16L5Ay6a3DcJtAb6kML4G+STcKb1pnH93dgbMhZeEQ== X-Received: by 2002:a02:5a89:: with SMTP id v131mr25443571jaa.130.1561476950125; Tue, 25 Jun 2019 08:35:50 -0700 (PDT) Received: from [172.19.131.32] ([8.46.75.11]) by smtp.gmail.com with ESMTPSA id w23sm21314439ioa.51.2019.06.25.08.35.39 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 25 Jun 2019 08:35:49 -0700 (PDT) Subject: Re: [PATCH BUGFIX IMPROVEMENT V2 0/7] boost throughput with synced I/O, reduce latency and fix a bandwidth bug To: Paolo Valente Cc: linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, ulf.hansson@linaro.org, linus.walleij@linaro.org, bfq-iosched@googlegroups.com, oleksandr@natalenko.name, bottura.nicola95@gmail.com, srivatsa@csail.mit.edu References: <20190625051249.39265-1-paolo.valente@linaro.org> From: Jens Axboe Message-ID: <8575fbfc-79b3-c58d-0440-9b7736bdee6a@kernel.dk> Date: Tue, 25 Jun 2019 09:35:01 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.7.1 MIME-Version: 1.0 In-Reply-To: <20190625051249.39265-1-paolo.valente@linaro.org> 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 6/24/19 11:12 PM, Paolo Valente wrote: > [SAME AS V1, APART FROM SRIVATSA ADDED AS REPORTER] > > Hi Jens, > this series, based against for-5.3/block, contains: > 1) The improvements to recover the throughput loss reported by > Srivatsa [1] (first five patches) > 2) A preemption improvement to reduce I/O latency > 3) A fix of a subtle bug causing loss of control over I/O bandwidths Applied for 5.3, thanks. -- Jens Axboe