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=-2.5 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,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 7B3F8C5B57D for ; Wed, 3 Jul 2019 01:24:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4BBEA206A3 for ; Wed, 3 Jul 2019 01:24:19 +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="g5iPeQmY" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727381AbfGCBYS (ORCPT ); Tue, 2 Jul 2019 21:24:18 -0400 Received: from mail-wm1-f65.google.com ([209.85.128.65]:40381 "EHLO mail-wm1-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726821AbfGCBYS (ORCPT ); Tue, 2 Jul 2019 21:24:18 -0400 Received: by mail-wm1-f65.google.com with SMTP id v19so453929wmj.5 for ; Tue, 02 Jul 2019 18:24:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=unipv-it.20150623.gappssmtp.com; s=20150623; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=yUg05Hk1IFbGpfRrhKAsZAvC6wWCLTPkzcVqmZs4SKA=; b=g5iPeQmYLkfVdgBaJc3YBcT40rKuuYsJ+z7XCfgD2CCGWBDGKIquZvSYcM8XASQPFw OWdwjWTvaRS2B91hH8/ZjcPLuncpixJtFKBRqH5CjIovgA5GRC4Ts9h1vbo6nm7zjMI0 s0cO5O2HploepnYJxLu0DKBsawX3kVep96gmUlbanWaY30/a8K63WPwde9tkASttbgPp xjy58UpjOMCu3qDjHYUxqrI7IzBcYo41iOspEKJ4Hhb1GzfhDBO/lM9f08CLYPi5h2vm /JkpWKhUPt/szBn9fVkV1DoU4Lv4VZztzs62svk96N3w/rXKfjrWCBjzgJVQYzJMDNWA 3XVw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=yUg05Hk1IFbGpfRrhKAsZAvC6wWCLTPkzcVqmZs4SKA=; b=DozJlMIz9NQkgssJbULTa91YEEiM5SfjtxV55ZFW6A2QP3HQ1rC9X/hf0lTEo2RT0r b71YZjCVJjIVJylpWeHFB6cbnqHZhoCGceTi4xPWtM/D546/NDMFKNEMyZODp85Obi6e vpn+pgTo2ftFjAFTJxM5qgLJC3ptv14nXcIclpGKxL7AMkG4nLJSgQg9qsfzGaJvPFYe SYwW72/XZJddZ9PZqzWYc3iI0CTRyLPBjd6vOr4qF3l4fLsRhVhPFAH+P//kxqrU2w0E 4s3iZLvUwApG10n9eS25Rfhwtnk8iQHKxU/uElCFzqz+i+SeVDU3QUHrpzppo80xlcmQ BVog== X-Gm-Message-State: APjAAAWrymWwleRZ6vGLQC1JQB+V6CDOv2YA53nsHyJEIIH4I3H09wjo w8VkaTkacwncx292R8pNl5kyoKHAw5I= X-Google-Smtp-Source: APXvYqwAXjsPiygQ4TCbiDLx0JDEpLdDugHVs3Qg+aF7AKaEEbTDmboJT6HgQ5w7QajBFy+VPOe4FA== X-Received: by 2002:a1c:ac81:: with SMTP id v123mr4932875wme.145.1562106995220; Tue, 02 Jul 2019 15:36:35 -0700 (PDT) Received: from brian.unipv.it ([37.162.88.147]) by smtp.gmail.com with ESMTPSA id t6sm540000wmb.29.2019.07.02.15.36.33 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 02 Jul 2019 15:36:33 -0700 (PDT) Date: Wed, 3 Jul 2019 00:36:30 +0200 From: Andrea Vai To: Johannes Thumshirn Cc: Jens Axboe , linux-usb@vger.kernel.org, linux-scsi@vger.kernel.org, Himanshu Madhani , Hannes Reinecke , Ming Lei , Omar Sandoval , "Martin K. Petersen" , Greg KH , Alan Stern Subject: Re: Slow I/O on USB media after commit f664a3cc17b7d0a2bc3b3ab96181e1029b0ec0e6 Message-ID: <20190702223630.GA3735@brian.unipv.it> References: <20190702115117.GC4463@x250.microfocus.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190702115117.GC4463@x250.microfocus.com> User-Agent: Mutt/1.5.24 (2015-08-30) Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org On 02/07/19 13:51:17, Johannes Thumshirn wrote: > On Tue, Jul 02, 2019 at 12:46:45PM +0200, Andrea Vai wrote: > > Hi, > > I have a problem writing data to a USB pendrive, and it seems > > kernel-related. With the help of Greg an Alan (thanks) and some > > bisect, I found out the offending commit being > > > > commit f664a3cc17b7d0a2bc3b3ab96181e1029b0ec0e6 > > > > [...] > > Hi, > > Can you please check what IO scheduler you have set for your USB pendrive? > > i.e. with: > cat /sys/block/$DISK/queue/scheduler > # cat /sys/block/sdf/queue/scheduler [mq-deadline] none Many thanks, Andrea