*BSD News Article 93919


Return to BSD News archive

Path: euryale.cc.adfa.oz.au!newshost.carno.net.au!harbinger.cc.monash.edu.au!munnari.OZ.AU!news.ecn.uoknor.edu!feed1.news.erols.com!howland.erols.net!news.mathworks.com!news1.best.com!nntp2.ba.best.com!not-for-mail
From: "Jordan K. Hubbard" <jkh@FreeBSD.org>
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: SCSI_DELAY in kernel config
Date: Sat, 19 Apr 1997 07:02:58 -0700
Organization: Walnut Creek CDROM
Lines: 21
Message-ID: <3358D092.446B9B3D@FreeBSD.org>
References: <5j8301$aja$1@richmond.freedomnet.com>
NNTP-Posting-Host: time.cdrom.com
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
X-Mailer: Mozilla 3.01 (X11; I; FreeBSD 2.2-STABLE i386)
To: kbyanc@freedomnet.com
Xref: euryale.cc.adfa.oz.au comp.unix.bsd.freebsd.misc:39345


kbyanc@freedomnet.com wrote:
> 
> 
>   Out of curiosity, does anyone know exactly what the SCSI_DELAY option is for in
> the FreeBSD kernel config file. I was editing the GENERIC kernel

It's the amount of time the SCSI subsystem will wait for devices to
"settle" before trying to probe everyone.  If you don't have any
ill-behaved tape drives or other SCSI devices with long setup times, you
can take it out.

> the LINT configuration and it doesn't even mention it. What exactly does
> SCSI_DELAY do and can I improve system performance by reducing the value or even
> setting it to 0?

You won't affect performance at all, really, you'll just decrease the
amount of time it takes you to boot the system.  Once you're up, it has
no further effect.
-- 
- Jordan Hubbard
  FreeBSD core team / Walnut Creek CDROM.