From owner-freebsd-hackers@freebsd.org Sun Sep 11 16:50:09 2016 Return-Path: Delivered-To: freebsd-hackers@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id C6AB5BD66E9 for ; Sun, 11 Sep 2016 16:50:09 +0000 (UTC) (envelope-from george+freebsd@m5p.com) Received: from mailhost.m5p.com (mailhost.m5p.com [IPv6:2001:418:3fd::f7]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 7A1AEB20 for ; Sun, 11 Sep 2016 16:50:09 +0000 (UTC) (envelope-from george+freebsd@m5p.com) Received: from [10.100.0.31] (haymarket.m5p.com [10.100.0.31]) by mailhost.m5p.com (8.14.5/8.14.5) with ESMTP id u8BGo1Vi028376 for ; Sun, 11 Sep 2016 12:50:07 -0400 (EDT) (envelope-from george+freebsd@m5p.com) To: freebsd-hackers@freebsd.org From: George Mitchell Subject: Laptop disk spindown Message-ID: <50125b8f-f24d-6b78-f474-7e97017302e3@m5p.com> Date: Sun, 11 Sep 2016 12:50:01 -0400 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:45.0) Gecko/20100101 Thunderbird/45.3.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-Scanned-By: MIMEDefang 2.73 X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.2.7 (mailhost.m5p.com [10.100.0.247]); Sun, 11 Sep 2016 12:50:07 -0400 (EDT) X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 11 Sep 2016 16:50:09 -0000 Smartctl reports that my laptop disk has started and stopped 101,798 times in 2,027 hours of operation, or roughly once a minute. I imagine that saves wear and tear on the disk, but it also makes the laptop seem remarkably sluggish for an A8 based system. Isn't there some sysctl that will lengthen the idle time before stopping the disk? I don't see one in the ada man page. -- George