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 10EE7C4CEC9 for ; Fri, 20 Sep 2019 07:25:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DB8362086A for ; Fri, 20 Sep 2019 07:25:21 +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="07uEuJnV" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2395005AbfITHZV (ORCPT ); Fri, 20 Sep 2019 03:25:21 -0400 Received: from mail-wr1-f66.google.com ([209.85.221.66]:38446 "EHLO mail-wr1-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2395001AbfITHZV (ORCPT ); Fri, 20 Sep 2019 03:25:21 -0400 Received: by mail-wr1-f66.google.com with SMTP id l11so5636098wrx.5 for ; Fri, 20 Sep 2019 00:25:19 -0700 (PDT) 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=pL77aWsxmY9zRkCk9IsPculrofm/E1zYHzAWnSm2f9Q=; b=07uEuJnVhW+Z5KMcd9ZnVju6su0nIq/Mwaf+wx/rHNyfGniOPy8Ga6LYPO4C1CT3pb OfBTyH4HitWfD0P2yAE3X9c9qZNb7m9jKARKS5Trt+KH23VlPf7iZ3VcRWQcMTpGyuk+ bGCcfrMO0Z6m4z1MUsPF4FtYKFjgLUbyrqmu+hXjTHfc/uV7E+5WDLvY4NLmqxje1dGM 1VE7qp6T4potssJT1EWADvjOfmZYJewqOwnhGssIeTjqVWR/dg2ijjFDrp9Ov9o+3A7+ Co9DpQrJ/+0zpXJEtgpCEVPh+OwyuwpNlvWpPeLgCyhXBNwXHQ56eUegxo3Rfrbvungi SJXA== 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=pL77aWsxmY9zRkCk9IsPculrofm/E1zYHzAWnSm2f9Q=; b=E3DWRKfFRRINbm5qieEI8TCWzxjbC4gR8PNnBx1WlWO7w+bfvhk8H9QIQrV1CxJTL7 B+U0JHoufJfS5AYR+aEB6IOFGL3oW7LEb0I4Jp8rU8rqUYd3gMFm+bpI2o7feLDE9jUk cu7/rsEiyu1ab6AYNP85S8o6A4hDvOfSE2rc1P9XIJgrJ3xZGtyiyWFXb7QEeDBaBZ0a X1zAMa/RMqgFtQPMZVD2RWuo39KuIiuFN+Lq2Oxs+y24HUHSHLOd0kPudrO0HSx+rvaV CzoQoJk0Z9v8zj4NBMO+hjVImGRCwFZTH6gwhTZjZFc6HfM0Q0REUuhjrZwx7nq1eeZj vSJQ== X-Gm-Message-State: APjAAAWFCV2EvGwOEhCIaEWD4+UGiVjwEQ3vmJvyAD0bQcxAZbWeOHqd 56Q/sC3vmaAWmu/PNbwp4/TDSg== X-Google-Smtp-Source: APXvYqx75HjAsmDJgjLl1E3x6d59uqVGsx2Jn9lY5MfY/4VDWSiN7ieSZL8pWjJD3s2KDoZqv1yZjA== X-Received: by 2002:adf:fb8e:: with SMTP id a14mr11254352wrr.304.1568964319087; Fri, 20 Sep 2019 00:25:19 -0700 (PDT) Received: from angus.unipv.it (angus.unipv.it. [193.206.67.163]) by smtp.gmail.com with ESMTPSA id f143sm1227111wme.40.2019.09.20.00.25.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 20 Sep 2019 00:25:18 -0700 (PDT) Message-ID: <3d9bf0023e01e6b29c85c2099b7466e94d06a090.camel@unipv.it> Subject: Re: Slow I/O on USB media after commit f664a3cc17b7d0a2bc3b3ab96181e1029b0ec0e6 From: Andrea Vai To: Alan Stern Cc: Johannes Thumshirn , Jens Axboe , USB list , SCSI development list , Himanshu Madhani , Hannes Reinecke , Ming Lei , Omar Sandoval , "Martin K. Petersen" , Greg KH Date: Fri, 20 Sep 2019 09:25:17 +0200 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-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Il giorno gio, 19/09/2019 alle 13.54 -0400, Alan Stern ha scritto: > > In general, USB flash drives should not be expected to work as well > as > an actual disk drive connected over USB. Ok, so I think I'll buy some different hardware. Would an SSD drive (connected over USB) behave like a flash drive or like an "actual disk drive" from this point of view? Many thanks, and bye Andrea