From owner-freebsd-hackers@freebsd.org Sun Sep 11 17:04:22 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 4D08BBD6F7D for ; Sun, 11 Sep 2016 17:04:22 +0000 (UTC) (envelope-from eugen@grosbein.net) Received: from hz.grosbein.net (hz.grosbein.net [78.47.246.247]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "hz.grosbein.net", Issuer "hz.grosbein.net" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id D89E5B1B for ; Sun, 11 Sep 2016 17:04:21 +0000 (UTC) (envelope-from eugen@grosbein.net) Received: from eg.sd.rdtc.ru (root@eg.sd.rdtc.ru [62.231.161.221]) by hz.grosbein.net (8.14.9/8.14.9) with ESMTP id u8BH4B8B050553 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NOT); Sun, 11 Sep 2016 19:04:11 +0200 (CEST) (envelope-from eugen@grosbein.net) X-Envelope-From: eugen@grosbein.net X-Envelope-To: george+freebsd@m5p.com Received: from [10.58.0.10] (dadvw [10.58.0.10]) by eg.sd.rdtc.ru (8.15.2/8.15.2) with ESMTPS id u8BH47cB008638 (version=TLSv1.2 cipher=DHE-RSA-AES128-SHA bits=128 verify=NOT); Mon, 12 Sep 2016 00:04:07 +0700 (KRAT) (envelope-from eugen@grosbein.net) Subject: Re: Laptop disk spindown To: George Mitchell , freebsd-hackers@freebsd.org References: <50125b8f-f24d-6b78-f474-7e97017302e3@m5p.com> From: Eugene Grosbein Message-ID: <57D58E82.4020605@grosbein.net> Date: Mon, 12 Sep 2016 00:04:02 +0700 User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:38.0) Gecko/20100101 Thunderbird/38.7.2 MIME-Version: 1.0 In-Reply-To: <50125b8f-f24d-6b78-f474-7e97017302e3@m5p.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=0.3 required=5.0 tests=BAYES_00,LOCAL_FROM autolearn=no version=3.3.2 X-Spam-Report: * -2.3 BAYES_00 BODY: Bayes spam probability is 0 to 1% * [score: 0.0000] * 2.6 LOCAL_FROM From my domains X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on hz.grosbein.net 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 17:04:22 -0000 11.09.2016 23:50, George Mitchell пишет: > 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 Put the following to /usr/local/etc/rc.d/tune-spindown. Perhaps, we could have more clever and generalized version in base... #!/bin/sh # PROVIDE: tune-spindown # REQUIRE: FILESYSTEMS # BEFORE: DAEMON # KEYWORD: nojail case "$1" in *start) camcontrol standby ada0 -t 300 # dd if=/dev/ada0 of=/dev/null bs=512 count=1 >/dev/null 2>&1 ;; stop) camcontrol standby ada0 -t 0 ;; esac