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=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 6A792C5DF61 for ; Thu, 7 Nov 2019 07:04:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3DD4D21D6C for ; Thu, 7 Nov 2019 07:04:41 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=unipv-it.20150623.gappssmtp.com header.i=@unipv-it.20150623.gappssmtp.com header.b="BED9/AYx" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727302AbfKGHEk (ORCPT ); Thu, 7 Nov 2019 02:04:40 -0500 Received: from mail-wm1-f66.google.com ([209.85.128.66]:52009 "EHLO mail-wm1-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726514AbfKGHEj (ORCPT ); Thu, 7 Nov 2019 02:04:39 -0500 Received: by mail-wm1-f66.google.com with SMTP id q70so1223804wme.1 for ; Wed, 06 Nov 2019 23:04:36 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=unipv-it.20150623.gappssmtp.com; s=20150623; h=message-id:subject:from:to:cc:date:in-reply-to:references :user-agent:mime-version:content-transfer-encoding; bh=1BWOBnBh3RsSrHmTF9OyTNjqu4CElUB2toH/DiA/qIc=; b=BED9/AYxEqSzI3EIPyUatgXBzDzJIxvgb0tT/vCP+uqowsV2RHUg0bX6M8PTiGO66K n7MyBQhs7dvtPaFHFKpel/rUchRTLdALNm7Nou59bT7p1fZ0MQGt+lJi3gBhtLgJe2nI K2ljk6GK9pXXI9DWK67jD+Edy51V3hkVEHkATxqkphL1L5B/RUdDw8UV9MN6cnC+feiQ X1yVn1O0lJ2Qqr7nY1RV8g5jxqtwrGcS1eGKEWk337YlszC44W+AkYRuFLEBO4SJJuv7 ORRsE2UglZFYFgEQC2tCWXH7/lTb3I9PXK50YxjTCVoF749iSKlHRdTYyRllwY0Nix7R cVbA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:message-id:subject:from:to:cc:date:in-reply-to :references:user-agent:mime-version:content-transfer-encoding; bh=1BWOBnBh3RsSrHmTF9OyTNjqu4CElUB2toH/DiA/qIc=; b=auJCnQMosLa0jAf9dgVm9QXnFWDIN3TXfgpjo38Zx+MyRmG56G/qQHi2u80hTVKDTz +pnerB5lxJYVsjJ2XMyHZAScDNJUMVYY+yvHo78Vm5eNtioIPect7txiDxE7m/Uhiovx NR2YVm8hJ/GS9l9VOy6PzXdIRg++6j6jl4ImhHV7Vl2+E2sT1rpmAHi0EIkD91iuJgnQ TGtSf/AxuKp5ZrScOAYeOJvT20arLnizsZgW2t+GodJZBwGxKMlR7mnsSzx/xFH5Isjx aZw7b+EJhEWPDJ0HifH3trtFGnyJYJooz+YNtmBtxJtAvV0V+mjG4siG+HvyMi3/ndHl grCQ== X-Gm-Message-State: APjAAAWLKoYDTSQKvMiA6RGigjIOO2+Z40vmR69I4selGN55D0Pg2uNP ovaxsas8OznzNKVwi7AnOmO4DA== X-Google-Smtp-Source: APXvYqw5oCk6xXi6ixLz7jByPs1zY84R0XhXM9pbgD9ZCxKqdl36Geh9BAUevrqz0GAD8gxGpRTXcA== X-Received: by 2002:a05:600c:254f:: with SMTP id e15mr1260124wma.37.1573110275553; Wed, 06 Nov 2019 23:04:35 -0800 (PST) Received: from angus.unipv.it (angus.unipv.it. [193.206.67.163]) by smtp.gmail.com with ESMTPSA id u7sm1508088wre.59.2019.11.06.23.04.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 06 Nov 2019 23:04:34 -0800 (PST) Message-ID: Subject: Re: Slow I/O on USB media after commit f664a3cc17b7d0a2bc3b3ab96181e1029b0ec0e6 From: Andrea Vai To: Damien Le Moal , Alan Stern , Jens Axboe Cc: Johannes Thumshirn , USB list , SCSI development list , Himanshu Madhani , Hannes Reinecke , Ming Lei , Omar Sandoval , "Martin K. Petersen" , Greg KH , Hans Holmberg , Kernel development list Date: Thu, 07 Nov 2019 08:04:28 +0100 In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" User-Agent: Evolution 3.32.4 (3.32.4-1.fc30) MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Il giorno mer, 06/11/2019 alle 22.13 +0000, Damien Le Moal ha scritto: > > > Please simply try your write tests after doing this: > > echo mq-deadline > /sys/block/ disk>/queue/scheduler > > And confirm that mq-deadline is selected with: > > cat /sys/block//queue/scheduler > [mq-deadline] kyber bfq none ok, which kernel should I test with this: the fresh git cloned, or the one just patched with Alan's patch, or doesn't matter which one? Thanks, and bye, Andrea