From owner-freebsd-mobile Fri Feb 21 12:30: 1 2003 Delivered-To: freebsd-mobile@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 7CAEB37B405 for ; Fri, 21 Feb 2003 12:30:00 -0800 (PST) Received: from PIKES.panasas.com (gw2.panasas.com [65.194.124.178]) by mx1.FreeBSD.org (Postfix) with ESMTP id 3A93B44001 for ; Fri, 21 Feb 2003 12:29:56 -0800 (PST) (envelope-from behanna@zbzoom.net) Received: from waumbek.panasas.com ([172.17.2.36]) by PIKES.panasas.com with SMTP (Microsoft Exchange Internet Mail Service Version 5.5.2653.13) id XA31Z9Z6; Fri, 21 Feb 2003 15:29:54 -0500 From: Chris BeHanna Reply-To: behanna@zbzoom.net Organization: Western Pennsylvania Pizza Disposal Unit To: freebsd-mobile@freebsd.org Subject: Re: Dell Inspiron hard disk Date: Fri, 21 Feb 2003 15:29:54 -0500 User-Agent: KMail/1.5 References: <200302211642.h1LGggO1006496@himinbjorg.ttsg.com> In-Reply-To: <200302211642.h1LGggO1006496@himinbjorg.ttsg.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200302211529.54218.behanna@zbzoom.net> Sender: owner-freebsd-mobile@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org The "ker-chunk" every 30 seconds is probably the syncer. There is a patch floating around to create some sysctls to lengthen the syncer interval. If there are no dirty vnodes, the syncer shouldn't touch the disk, though. Personally, I'd rather have the syncer run on schedule, then let the disk just remain quiet if there aren't any dirty vnodes. Every five minutes, cron launches "atrun" to see if any at(1) jobs are pending. This triggers a write to /var/log/cron, which forces the disk to spin up. If you don't care about at jobs, you can comment the atrun line out of /etc/crontab. -- Chris BeHanna Software Engineer (Remove "bogus" before responding.) behanna@bogus.zbzoom.net Turning coffee into software since 1990. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-mobile" in the body of the message