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[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