From owner-freebsd-stable@freebsd.org Mon Jan 2 08:28:02 2017 Return-Path: Delivered-To: freebsd-stable@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 69928C9A40A for ; Mon, 2 Jan 2017 08:28:02 +0000 (UTC) (envelope-from amarat@li.ru) Received: from fallback6.mail.ru (fallback6.mail.ru [94.100.181.147]) by mx1.freebsd.org (Postfix) with ESMTP id CBC73124C for ; Mon, 2 Jan 2017 08:28:00 +0000 (UTC) (envelope-from amarat@li.ru) Received: from smtp30.i.mail.ru (smtp30.i.mail.ru [94.100.177.90]) by fallback6.mail.ru (mPOP.Fallback_MX) with ESMTP id 353683E4A10D for ; Mon, 2 Jan 2017 11:27:59 +0300 (MSK) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mail.ru; s=mail2; h=Content-Type:MIME-Version:Date:Message-ID:Subject:From:To; bh=IKdY5Ehdi1/UTGtkZuMfnclqDVses5tuGbUAGXJu3Sw=; b=spnMdJqT2+UI2NmuiZu5+XcvBqc1Pd3dgxCC92+c6hYqf+JOFxWJky1RIHEnNp5/KUHqfvpekNJiQVEnG5TgPLu6zaiEJrILeGbfV0UTgjYpHgw3KWvDTmEKTGD4OSzcR1ndBmhTpiSzf6e1qG8FqseOGdBKtUlOuhP3Zvuil8w=; Received: from [46.42.164.119] (port=59591 helo=zealot.ksu.ru) by smtp30.i.mail.ru with esmtpa (envelope-from ) id 1cNxyA-0003Br-Fb for freebsd-stable@freebsd.org; Mon, 02 Jan 2017 11:27:51 +0300 To: FreeBSD stable From: "Marat N.Afanasyev" Subject: usb 3.0 thumb drive speed limit Message-ID: <586A0F05.6050504@li.ru> Date: Mon, 2 Jan 2017 11:27:49 +0300 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:43.0) Gecko/20100101 Firefox/43.0 SeaMonkey/2.40 MIME-Version: 1.0 Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-256; boundary="------------ms000104070208050404080000" Authentication-Results: smtp30.i.mail.ru; auth=pass smtp.auth=amarat@li.ru smtp.mailfrom=amarat@li.ru X-E1FCDC63: 3EE845B9D9E5A2B56E2BE7EB3E820BB0DC961F69A1D5625B X-E1FCDC64: 672980905E61020BA61C046CABB28E21DD8C568C2557AE92CFB7D4A7524C97AE X-Mailru-Sender: 72B8A422CBF4A65B9C6F27F2260FCD7167719C5957C191A7F24AE655CDB04D607CAF58F8C9662AA6DDDE7B70B5F5C79F X-Mras: OK X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 02 Jan 2017 08:28:02 -0000 This is a cryptographically signed message in MIME format. --------------ms000104070208050404080000 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: quoted-printable I wonder is there a speed limit on usb 3.0? I've bought ugen0.4: at usbus0 umass2 on uhub7 umass2: on usbus0 da2 at umass-sim2 bus 2 scbus9 target 0 lun 0 da2: Removable Direct Access SPC-4 SCSI device da2: Serial Number AA010808161609220143 da2: 40.000MB/s transfers da2: 59840MB (122552320 512 byte sectors) da2: quirks=3D0x2 that claims 'Up to 245 MBytes/sec read speed' and dd shows: % dd if=3D/dev/da2 of=3D/dev/null bs=3D1m count=3D1000 1000+0 records in 1000+0 records out 1048576000 bytes transferred in 25.688997 secs (40818098 bytes/sec) why we have such a limit? --=20 SY, Marat --------------ms000104070208050404080000 Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIAGCSqGSIb3DQEHAqCAMIACAQExDzANBglghkgBZQMEAgEFADCABgkqhkiG9w0BBwEAAKCC Cs8wggTlMIIDzaADAgECAhBVgZ2vXT9CFdRn/bSHBL2jMA0GCSqGSIb3DQEBCwUAMHUxCzAJ 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