From owner-freebsd-questions@FreeBSD.ORG Sun Jun 7 10:07:37 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 0A8A01065674 for ; Sun, 7 Jun 2009 10:07:37 +0000 (UTC) (envelope-from glen.j.barber@gmail.com) Received: from mail-bw0-f213.google.com (mail-bw0-f213.google.com [209.85.218.213]) by mx1.freebsd.org (Postfix) with ESMTP id 821568FC1A for ; Sun, 7 Jun 2009 10:07:35 +0000 (UTC) (envelope-from glen.j.barber@gmail.com) Received: by bwz9 with SMTP id 9so14219bwz.43 for ; Sun, 07 Jun 2009 03:07:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.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=xPPYgmHluAaZfbozBosqwhJiH8lbYREltxa2/2aqYcY=; b=DUY3JuD9B0RR9xiWrYI2nf8ym/R69w86ntNPlzBtoCwWqnJ3PV3EjclhqMmz9eB0kS 2c8P7UEBJSmKfIQrugf9bfBxMPk8YN0Cxg1Q09NtbKcXIa2V1Dj3hNKCqtGDmOMowg85 wwHqhbdICYeEuTjcEZoHpj3rI0cL8A13mKzJk= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type:content-transfer-encoding; b=ixC2RpYh3Vnh7wx2G/ycvhp1Z1F/4Eq0y58+hv50Zg52KZuK0IczsV8zJ4toQfGaCw CYtglkG+vpyenrpK//Txc5JVr0+LPsdO7z3TxvIYB7SbKqlVLUbb8+UkF652bA8nXIRF a2ibCa9Lgd0xathC+t/+isJtyn6K2BKs8jRJo= MIME-Version: 1.0 Received: by 10.204.64.67 with SMTP id d3mr5270953bki.142.1244369255118; Sun, 07 Jun 2009 03:07:35 -0700 (PDT) In-Reply-To: References: <4ad871310906070300g5aa63988m370e6362829b2f28@mail.gmail.com> Date: Sun, 7 Jun 2009 06:07:35 -0400 Message-ID: <4ad871310906070307o212f0a93x8e77faba1cebf97c@mail.gmail.com> From: Glen Barber To: "John ." 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 10:07:37 -0000 On Sun, Jun 7, 2009 at 6:05 AM, John . wrote: > 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? > Ah, I thought you wanted to stress test the throughput to get errors. In that case, have a look at sysutils/smartmontools in ports. --=20 Glen Barber http://www.dev-urandom.com http://www.linkedin.com/in/glenjbarber