From owner-freebsd-current@FreeBSD.ORG Wed Jan 20 13:55:26 2010 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 7F89A1065670; Wed, 20 Jan 2010 13:55:26 +0000 (UTC) (envelope-from james-freebsd-current@jrv.org) Received: from mail.jrv.org (rrcs-24-73-246-106.sw.biz.rr.com [24.73.246.106]) by mx1.freebsd.org (Postfix) with ESMTP id 462D68FC0A; Wed, 20 Jan 2010 13:55:25 +0000 (UTC) Received: from kremvax.housenet.jrv (kremvax.housenet.jrv [192.168.3.124]) by mail.jrv.org (8.14.3/8.14.3) with ESMTP id o0KDtOJK077360; Wed, 20 Jan 2010 07:55:24 -0600 (CST) (envelope-from james-freebsd-current@jrv.org) Authentication-Results: mail.jrv.org; domainkeys=pass (testing) header.from=james-freebsd-current@jrv.org DomainKey-Signature: a=rsa-sha1; s=enigma; d=jrv.org; c=nofws; q=dns; h=message-id:date:from:user-agent:mime-version:cc:subject: references:in-reply-to:content-type:content-transfer-encoding; b=Eu1Q5A8hlZo1S7KQne6fNv8lmRHlSXQhzhJ7eSdLdzQyr6HDgzZU5Qb/XEqOaR/DR zOiSNu6lbNxngAipJufSD88/jQKp5PYn9UvvUKUrU2bZlJehOxBD9tW9XB5OpxyyVoV JG+JmjiSFGIhulVpyx+aueV/V5Ory2II+uH1BKQ= Message-ID: <4B570B4C.9000203@jrv.org> Date: Wed, 20 Jan 2010 07:55:24 -0600 From: "James R. Van Artsdalen" User-Agent: Thunderbird 2.0.0.23 (Macintosh/20090812) MIME-Version: 1.0 References: <4B55D9D4.1000008@FreeBSD.org> <823F6536-32A7-4BC6-9C6A-C84865A38458@samsco.org> In-Reply-To: <823F6536-32A7-4BC6-9C6A-C84865A38458@samsco.org> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: Alexander Motin , FreeBSD-Current Subject: Re: Pack of CAM improvements X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 20 Jan 2010 13:55:26 -0000 Scott Long wrote: > I've fought many times against delay values like this. They never > work well enough. At some point I hope to add support for staggered spin-ups, perhaps a loader.conf setting for people with more than 20-30 disks. At the 100-120 disk level it seems unlikely that any reasonable fixed delay would be reasonable.