From owner-freebsd-questions@FreeBSD.ORG Wed May 12 22:53:56 2010 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 58248106564A for ; Wed, 12 May 2010 22:53:56 +0000 (UTC) (envelope-from cswiger@mac.com) Received: from asmtpout028.mac.com (asmtpout028.mac.com [17.148.16.103]) by mx1.freebsd.org (Postfix) with ESMTP id 3D34B8FC19 for ; Wed, 12 May 2010 22:53:56 +0000 (UTC) MIME-version: 1.0 Content-transfer-encoding: 7BIT Content-type: text/plain; charset=us-ascii Received: from cswiger1.apple.com ([17.209.4.71]) by asmtp028.mac.com (Sun Java(tm) System Messaging Server 6.3-8.01 (built Dec 16 2008; 32bit)) with ESMTPSA id <0L2B001RTWXE1Y80@asmtp028.mac.com> for freebsd-questions@freebsd.org; Wed, 12 May 2010 15:53:39 -0700 (PDT) X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 ipscore=0 phishscore=0 bulkscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx engine=6.0.2-1004200000 definitions=main-1005120154 X-Proofpoint-Virus-Version: vendor=fsecure engine=1.12.8161:2.4.5,1.2.40,4.0.166 definitions=2010-05-12_03:2010-02-06, 2010-05-12, 2010-05-12 signatures=0 From: Chuck Swiger In-reply-to: Date: Wed, 12 May 2010 15:53:38 -0700 Message-id: References: <201005121456.o4CEurEZ078671@lava.sentex.ca> To: "A. Wright" X-Mailer: Apple Mail (2.1078) Cc: FreeBSD - Subject: Re: Long I/O pauses on same mass storage 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: Wed, 12 May 2010 22:53:56 -0000 Hi-- On May 12, 2010, at 1:27 PM, A. Wright wrote: > 9 Power_On_Hours 0x0032 100 100 000 Old_age Always - 383 > 10 Spin_Retry_Count 0x0032 100 253 000 Old_age Always - 0 > 11 Calibration_Retry_Count 0x0032 100 253 000 Old_age Always - 0 > 12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 11 > 192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always - 10 > 193 Load_Cycle_Count 0x0032 189 189 000 Old_age Always - 33334 Thanks for real data to work from. There's no signs of surface failure with high reallocated sectors or anything, but your drive is parking it's heads nearly 100 times an hour. Someone else suggested this was a "green firmware" drive, so it might be spinning down and so forth trying to save power, and the OS is complaining because it takes a while to spin back up and become online. I've heard rumors that there exists an WDIDLE utility which might be able to tweak the firmware which might help. Regards, -- -Chuck