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[193.206.67.163]) by smtp.gmail.com with ESMTPSA id l7sm3963426wrq.61.2019.11.28.03.40.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 28 Nov 2019 03:40:14 -0800 (PST) Message-ID: Subject: Re: AW: AW: Slow I/O on USB media after commit f664a3cc17b7d0a2bc3b3ab96181e1029b0ec0e6 From: Andrea Vai To: "Schmid, Carsten" , Finn Thain Cc: Ming Lei , Damien Le Moal , Alan Stern , Jens Axboe , Johannes Thumshirn , USB list , SCSI development list , Himanshu Madhani , Hannes Reinecke , Omar Sandoval , "Martin K. Petersen" , Greg KH , Hans Holmberg , Kernel development list Date: Thu, 28 Nov 2019 12:40:11 +0100 In-Reply-To: References: <20191109222828.GA30568@ming.t460p> <20191123072726.GC25356@ming.t460p> <20191125035437.GA3806@ming.t460p> <20191125102928.GA20489@ming.t460p> <20191125151535.GA8044@ming.t460p> <0876e232feace900735ac90d27136288b54dafe1.camel@unipv.it> <20191126023253.GA24501@ming.t460p> <0598fe2754bf0717d81f7e72d3e9b3230c608cc6.camel@unipv.it> 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 gio, 28/11/2019 alle 08.12 +0000, Schmid, Carsten ha scritto: > > [...] > > I assume the only thing that you change between the benchmarks > is the kernel (and the modules, of course), right, Andrea? > It's my production machine, so apart from the changes involved in a "normal use of a PC" I can say that there are no changes I am aware of (apart from the kernel, and other changes you told me to do, such as changing the IO scheduler, etc)... but please remember I am not an expert, so feel free to ask me what other kind of changes I can tell you about. Thanks, Andrea