From owner-freebsd-questions@FreeBSD.ORG Mon Jul 23 04:56:09 2012 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id D9C901065672 for ; Mon, 23 Jul 2012 04:56:09 +0000 (UTC) (envelope-from jakub_lach@mailplus.pl) Received: from sam.nabble.com (sam.nabble.com [216.139.236.26]) by mx1.freebsd.org (Postfix) with ESMTP id AE99F8FC19 for ; Mon, 23 Jul 2012 04:56:09 +0000 (UTC) Received: from [192.168.236.26] (helo=sam.nabble.com) by sam.nabble.com with esmtp (Exim 4.72) (envelope-from ) id 1StAgi-0006BP-5M for freebsd-questions@freebsd.org; Sun, 22 Jul 2012 21:56:08 -0700 Date: Sun, 22 Jul 2012 21:56:08 -0700 (PDT) From: Jakub Lach To: freebsd-questions@freebsd.org Message-ID: <1343019368157-5729100.post@n5.nabble.com> In-Reply-To: References: <1342992043358-5729028.post@n5.nabble.com> <1342998350089-5729042.post@n5.nabble.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Subject: Re: "da0: 40.000MB/s transfers" What was rationale behind pegging USB 2.0 at 40MB/s? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 23 Jul 2012 04:56:09 -0000 Apparently my speeds are pretty decent, as this this advertised speed relates to read speed, and write one is pretty weak. People are reporting 62-70MB/s read and 17-31MB/s write. Are you saying that disk clearly bumping from 40MB/s read barrier (as I saw in midnight commander is my imagination or it's cause is totally unrelated to OS? I thought it's worth investigating, as FreeBSD coincidentally reports USB 2.0 ports as such. -- View this message in context: http://freebsd.1045724.n5.nabble.com/da0-40-000MB-s-transfers-What-was-rationale-behind-pegging-USB-2-0-at-40MB-s-tp5729028p5729100.html Sent from the freebsd-questions mailing list archive at Nabble.com.