From owner-freebsd-stable@FreeBSD.ORG Tue Jan 26 18:45:14 2010 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 24509106566C for ; Tue, 26 Jan 2010 18:45:14 +0000 (UTC) (envelope-from dan.naumov@gmail.com) Received: from mail-yw0-f197.google.com (mail-yw0-f197.google.com [209.85.211.197]) by mx1.freebsd.org (Postfix) with ESMTP id CFBAF8FC16 for ; Tue, 26 Jan 2010 18:45:13 +0000 (UTC) Received: by ywh35 with SMTP id 35so3881150ywh.7 for ; Tue, 26 Jan 2010 10:45:12 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:date:message-id:subject :from:to:content-type; bh=G1WkTGetneKm8+XA63DyBbI8BGbihkIF+js3UBODQnI=; b=PKfIlTQTs1xsLmHwxycqugiQ7LKAjG4oegXmO5FyFwgZNgujF9Cfot+InhZMQa7Cts 4eOk68x+4RXljtdGkEtRTYimmyV9gxno2hA+njN6XsN5Y0OolCiyNlyEjgUwNbsnkzWa gfJ5kXaYqJNgnmThHlVbja9uaIDYgS39D0zOs= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:date:message-id:subject:from:to:content-type; b=dKs+TZZPyudVQT9ahq0/Em6ouJZhEmsgsSb3um7FRHow4ZA0/gvNsabQrcvNtRVGaJ NCp5OIWHVE/lfMEVOm8Pto9GFYt1C8RN7XYc2X7qS+r8REqgF3ivKkxMepsDJzlo+YCV UCc+vJajj7BebWHsYcycB0e/4qraIaGbdrke8= MIME-Version: 1.0 Received: by 10.101.115.16 with SMTP id s16mr10607298anm.21.1264531510612; Tue, 26 Jan 2010 10:45:10 -0800 (PST) Date: Tue, 26 Jan 2010 20:45:10 +0200 Message-ID: From: Dan Naumov To: FreeBSD-STABLE Mailing List Content-Type: text/plain; charset=ISO-8859-1 Subject: RE: immense delayed write to file system (ZFS and UFS2), performance issues X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 26 Jan 2010 18:45:14 -0000 > You're welcome. I just feel as bad for you as for everyone else who > has bought these obviously Windoze optimized harddrives. Unfortunately > neither wdidle3 nor an updated firmware is available or functioning on > the latest models in the Green series. At least that's what I've read > from other people having this issue. WD only claims they don't support > Linux and they probably have never heard of FreeBSD. This discussion made me have a look at my 2tb WD Green disks, one of them is from May 2009, looks pretty reasonable : Device Model: WDC WD20EADS-00R6B0 Serial Number: WD-WCAVY0301430 Firmware Version: 01.00A01 9 Power_On_Hours 0x0032 093 093 000 Old_age Always - 5253 193 Load_Cycle_Count 0x0032 200 200 000 Old_age Always - 55 And another is very recent, from December 2009, this does look a bit worrying in comparison: Device Model: WDC WD20EADS-32R6B0 Serial Number: WD-WCAVY1611513 Firmware Version: 01.00A01 9 Power_On_Hours 0x0032 100 100 000 Old_age Always - 136 193 Load_Cycle_Count 0x0032 199 199 000 Old_age Always - 5908 The disks are of exact same model and look to be same firmware. Should I be worried that the newer disk has, in 136 hours reached a higher Load Cycle count twice as big as on the disk thats 5253 hours old? - Sincerely, Dan Naumov