From owner-freebsd-questions@FreeBSD.ORG Sun Jun 7 10:05:10 2009 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 A3F79106564A for ; Sun, 7 Jun 2009 10:05:10 +0000 (UTC) (envelope-from comp.john@googlemail.com) Received: from mail-fx0-f215.google.com (mail-fx0-f215.google.com [209.85.220.215]) by mx1.freebsd.org (Postfix) with ESMTP id 302B28FC16 for ; Sun, 7 Jun 2009 10:05:09 +0000 (UTC) (envelope-from comp.john@googlemail.com) Received: by fxm11 with SMTP id 11so144295fxm.43 for ; Sun, 07 Jun 2009 03:05:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :date:message-id:subject:from:to:cc:content-type :content-transfer-encoding; bh=gx8ecrXzLRXcxLEa82YaRKJ5Mi4Og/GK1K++V3SG3oQ=; b=o7jb/GmhcwCOi0n5P7TgxWq8tjEms2eZlfRMon8jk/4I2PXdg6ptJx3oNzvIth53S9 /YfQg7cAEMmDP+VnrcXbiP8V8mAFJ0bE3ngqyKyrY+4vzEyw4u36eEgrQYSxCm7n0NHf ieJRv69k1mSJbiWDBTUygHkLmuo89KCrxUo1k= DomainKey-Signature: a=rsa-sha1; c=nofws; d=googlemail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type:content-transfer-encoding; b=fT0lDk9issfg/7+x1LDBnavf56EZ5JQ88MTEGfCpiLazGUBt29jQl80KeSr2ggbaEC XWameRESMQtcNirbG68ZXkZ/49WKPzPwW+v2LxWE20ohAUx6JsesQEihr5r+D4wg7cOE mntqrM7QS95a5klYdTeC+iC+/dx8Gxed52jE8= MIME-Version: 1.0 Received: by 10.223.110.200 with SMTP id o8mr2982671fap.56.1244369108766; Sun, 07 Jun 2009 03:05:08 -0700 (PDT) In-Reply-To: <4ad871310906070300g5aa63988m370e6362829b2f28@mail.gmail.com> References: <4ad871310906070300g5aa63988m370e6362829b2f28@mail.gmail.com> Date: Sun, 7 Jun 2009 11:05:08 +0100 Message-ID: From: "John ." To: Glen Barber Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Cc: freebsd-questions@freebsd.org Subject: Re: please recommend a disk-exercising program? 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: Sun, 07 Jun 2009 10:05:10 -0000 Hi Glen, thanks for replying > You can use dd(1) to stress test disk I/O. =A0Something like this should = work: > > dd if=3D/dev/${YOURDISK} of=3D/dev/null bs=3D1024k That will show me thruput. I need to see if bad blocks or similar are happening. Something like scandisk for instance. Maybe I'm thinking the wrong way. Maybe see if they have SMART and read from there? cheers --=20 John