From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from pigeon.gentoo.org ([208.92.234.80] helo=lists.gentoo.org) by finch.gentoo.org with esmtp (Exim 4.60) (envelope-from ) id 1QrYpg-0006LZ-WA for garchives@archives.gentoo.org; Thu, 11 Aug 2011 17:14:13 +0000 Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 6F4C521C0B1; Thu, 11 Aug 2011 17:13:58 +0000 (UTC) Received: from mail-ey0-f171.google.com (mail-ey0-f171.google.com [209.85.215.171]) by pigeon.gentoo.org (Postfix) with ESMTP id 69F9B21C01F for ; Thu, 11 Aug 2011 17:12:55 +0000 (UTC) Received: by eyg24 with SMTP id 24so1308643eyg.16 for ; Thu, 11 Aug 2011 10:12:54 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=mime-version:date:message-id:subject:from:to:content-type; bh=o2Z3YTzFjZ7ARxOZPobmwdncZitzeNVoWvxHgcKuBeM=; b=juUvUWxUTolSW/5s77+3fb6mua7wQl0a/4qGYFX1CDM8GtjYePfHV9kKS9DL1s9c6v DGfnr/usa218gijQ626/gIuHaSjD/uDaVdGoJsYnWA0KIcqmWx/CLYHKARiTKtjxVWW3 bfOXkRsunOrII90x+GQUm5DYw6SCYUd4Ik8uI= Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-Version: 1.0 Received: by 10.14.22.11 with SMTP id s11mr2925444ees.195.1313082774459; Thu, 11 Aug 2011 10:12:54 -0700 (PDT) Received: by 10.14.95.141 with HTTP; Thu, 11 Aug 2011 10:12:54 -0700 (PDT) Date: Thu, 11 Aug 2011 10:12:54 -0700 Message-ID: Subject: [gentoo-user] {OT} USB 3.0 hard drive speed test From: Grant To: Gentoo mailing list Content-Type: text/plain; charset=ISO-8859-1 X-Archives-Salt: X-Archives-Hash: 470e231e4a2f33e6beb34a1ecf4a7911 I'm testing this USB 3.0 bus-powered hard drive: http://www.amazon.com/gp/product/B0041OSQ9S and I get: # hdparm -tT /dev/sdb /dev/sdb: Timing cached reads: 8006 MB in 2.00 seconds = 4004.33 MB/sec Timing buffered disk reads: 252 MB in 3.01 seconds = 83.63 MB/sec # hdparm -tT /dev/sdb /dev/sdb: Timing cached reads: 8230 MB in 2.00 seconds = 4116.54 MB/sec Timing buffered disk reads: 252 MB in 3.02 seconds = 83.55 MB/sec # hdparm -tT /dev/sdb /dev/sdb: Timing cached reads: 8446 MB in 2.00 seconds = 4224.36 MB/sec Timing buffered disk reads: 230 MB in 3.02 seconds = 76.28 MB/sec Wikipedia says USB 3.0 has transmission speeds of up to 5 Gbit/s. Doesn't MB/sec denote mega*bytes* per second? - Grant