From owner-freebsd-performance@FreeBSD.ORG Mon May 2 13:23:31 2005 Return-Path: Delivered-To: freebsd-performance@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id F0C2E16A4CF; Mon, 2 May 2005 13:23:31 +0000 (GMT) Received: from silver.he.iki.fi (helenius.fi [193.64.42.241]) by mx1.FreeBSD.org (Postfix) with ESMTP id 99E4843D39; Mon, 2 May 2005 13:23:31 +0000 (GMT) (envelope-from pete@he.iki.fi) Received: from [195.163.185.142] (i2-142.rommon.fi [195.163.185.142]) by silver.he.iki.fi (Postfix) with ESMTP id B5854BC47; Mon, 2 May 2005 16:23:30 +0300 (EEST) Message-ID: <427629F7.5060704@he.iki.fi> Date: Mon, 02 May 2005 16:24:07 +0300 From: Petri Helenius User-Agent: Mozilla Thunderbird 1.0.2 (Windows/20050317) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Poul-Henning Kamp References: <17336.1115038283@critter.freebsd.dk> In-Reply-To: <17336.1115038283@critter.freebsd.dk> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit cc: Robert Watson cc: freebsd-performance@freebsd.org cc: Eric Anderson cc: =?ISO-8859-1?Q?=22Arne_=5C=22W=F6rner=5C=22=22?= Subject: Re: Very low disk performance on 5.x X-BeenThere: freebsd-performance@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Performance/tuning List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 02 May 2005 13:23:32 -0000 Poul-Henning Kamp wrote: >In message <42761FA7.1030500@centtech.com>, Eric Anderson writes: > > >>I'll be honest here, I don't care much if the speed difference between >>4.X and 5.X is measureable, or whatever. What I find is a little >>telling of an issue somewhere, is that READS are slower than WRITES! >>This is totally bogus to me - [...] >> >> > >If the disk has bad sectors or other hardware issues, this is not >an atypical result. > > > The drives I have report this using SMART and the counters stay at zero. Yes, we've seen the counters go nonzero when problems do exist. Pete