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=-1.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS 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 35479C00307 for ; Mon, 9 Sep 2019 06:09:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id EDCD32089F for ; Mon, 9 Sep 2019 06:09:08 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=natalenko.name header.i=@natalenko.name header.b="RW7yB7VN" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727058AbfIIGJI (ORCPT ); Mon, 9 Sep 2019 02:09:08 -0400 Received: from vulcan.natalenko.name ([104.207.131.136]:37358 "EHLO vulcan.natalenko.name" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726875AbfIIGJH (ORCPT ); Mon, 9 Sep 2019 02:09:07 -0400 X-Greylist: delayed 317 seconds by postgrey-1.27 at vger.kernel.org; Mon, 09 Sep 2019 02:09:06 EDT Received: from mail.natalenko.name (vulcan.natalenko.name [IPv6:fe80::5400:ff:fe0c:dfa0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by vulcan.natalenko.name (Postfix) with ESMTPSA id C2C755D6045; Mon, 9 Sep 2019 08:03:47 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=natalenko.name; s=dkim-20170712; t=1568009027; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=vcNUCkbMLofJESYwiLvXZxB1JxtkjqS0l4Y8aXZHaB8=; b=RW7yB7VNqZ//fQmFwXf6q/ueYkqf4/OLcTr1Wnpy4T8uTQNZBU6vpXJyQYu+fh7ua5dlaX cud3B6xoWA/fdK1fSaQC7pF6QbwS/QzlqbNpHLl10T/TKSGbAjV/1Br33mbJ0X+AEc4VCf bEZi5jJ4YI5dyQ0iy3NRY02XxwzcvKc= MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 7bit Date: Mon, 09 Sep 2019 08:03:47 +0200 From: Oleksandr Natalenko To: Paolo Valente Cc: Jens Axboe , linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, ulf.hansson@linaro.org, linus.walleij@linaro.org, bfq-iosched@googlegroups.com Subject: Re: [PATCH 0/4] block, bfq: series of improvements and small fixes of the injection mechanism In-Reply-To: <20190822152037.15413-1-paolo.valente@linaro.org> References: <20190822152037.15413-1-paolo.valente@linaro.org> Message-ID: <9088f78edc97279e34f6a96277d088f9@natalenko.name> X-Sender: oleksandr@natalenko.name User-Agent: Roundcube Webmail/1.3.10 ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=natalenko.name; s=arc-20170712; t=1568009028; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=vcNUCkbMLofJESYwiLvXZxB1JxtkjqS0l4Y8aXZHaB8=; b=Mr9oP/lV/M2M52dZIg4L9ybmL3UhN5khVLwPiBbsr+V1BWl9/T3PZILDtGYqn7exK6ak+u BXJ6iGo7BA4HEDsBPzxGaPm5wOo1fDb6qxrnGowdVtYbIDjhrRllBM+rkKok/Mxy3RELQP UFa8PXVHBokdWKd2KMXgFpLcgTzHevI= ARC-Seal: i=1; s=arc-20170712; d=natalenko.name; t=1568009028; a=rsa-sha256; cv=none; b=PbYcbBiP6sBkCNLu7WQxL2h490EROYLol/K59+8xCpvmxM88RaqCZeO1raRT+fPkONmyIi DT2exlJHqPiF/Y7VuVKG13QLGSmGn3SXSa59/Sts3RGLhfG8Moo0qw5m1sdWudBMgtlAen 6uB1RjCKsNJn0IqIQEm1X40BuTtUZrs= ARC-Authentication-Results: i=1; vulcan.natalenko.name; auth=pass smtp.auth=oleksandr@natalenko.name smtp.mailfrom=oleksandr@natalenko.name Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org On 22.08.2019 17:20, Paolo Valente wrote: > Hi Jens, > this patch series makes the injection mechanism better at preserving > control on I/O. > > Thanks, > Paolo > > Paolo Valente (4): > block, bfq: update inject limit only after injection occurred > block, bfq: reduce upper bound for inject limit to max_rq_in_driver+1 > block, bfq: increase update frequency of inject limit > block, bfq: push up injection only after setting service time > > block/bfq-iosched.c | 35 ++++++++++++++++++++++++++--------- > 1 file changed, 26 insertions(+), 9 deletions(-) > > -- > 2.20.1 FWIW, Tested-by: Oleksandr Natalenko (I run it for quite some time already). -- Oleksandr Natalenko (post-factum)