From owner-freebsd-current@FreeBSD.ORG Fri Oct 22 20:30:10 2004 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id DDF8416A4CE for ; Fri, 22 Oct 2004 20:30:10 +0000 (GMT) Received: from pooker.samsco.org (pooker.samsco.org [168.103.85.57]) by mx1.FreeBSD.org (Postfix) with ESMTP id 8233343D53 for ; Fri, 22 Oct 2004 20:30:10 +0000 (GMT) (envelope-from scottl@freebsd.org) Received: from [192.168.254.11] (junior-wifi.samsco.home [192.168.254.11]) (authenticated bits=0) by pooker.samsco.org (8.12.11/8.12.10) with ESMTP id i9MKUm3k062543; Fri, 22 Oct 2004 14:30:48 -0600 (MDT) (envelope-from scottl@freebsd.org) Message-ID: <41796D6D.7000108@freebsd.org> Date: Fri, 22 Oct 2004 14:28:29 -0600 From: Scott Long User-Agent: Mozilla/5.0 (X11; U; FreeBSD i386; en-US; rv:1.7.2) Gecko/20040929 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Garance A Drosihn References: <417960C2.8040007@freebsd.org> <20041022194008.GA23778@odin.ac.hmc.edu> <41796396.5070804@freebsd.org> In-Reply-To: X-Enigmail-Version: 0.86.1.0 X-Enigmail-Supports: pgp-inline, pgp-mime Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Status: No, hits=0.0 required=3.8 tests=none autolearn=no version=2.63 X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on pooker.samsco.org cc: freebsd-current@freebsd.org Subject: Re: Annoying SCSI waiting... X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 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: Fri, 22 Oct 2004 20:30:11 -0000 Garance A Drosihn wrote: > At 1:46 PM -0600 10/22/04, Scott Long wrote: > >> >> This is not just a problem with old disk drives, it's a problem >> with some cdrom and many tape drives. Maybe it can be set to 15 >> only if the sa, cd, and/or ch drivers are present. That still >> doesn't solve the problem with GENERIC, and I would like to keep >> GENERIC as compatible as possible. > > > One data point: I have dropped that value to 7 seconds (or less) > on every FreeBSD system I have ever built, for at least six or > seven years now. That goes back to a 60-MHz pentium, iirc (it was > a mean machine back when it was released, with a price-tag to match. > That machine is still the most expensive PC I have ever bought!). > > I don't know how low of a value would be safe, but I think we > could safely pick a value which is less than 15 seconds. > For just about everyone, a value of 2 seconds or less is just fine. For those with tape drives, changers, and (less likely) cdroms, a long delay after reset is still quite necessary. There are two knobs to adjust this, and I'd like GENERIC to remain compatible. It's 15 seconds, not 2 minutes. You get a longer delay that that just trying to set up the inital page tables on a large memory machine! Scott