Subject: Re: have scsibus sleep only one time
To: Matt Thomas <email@example.com>
From: Manuel Bouyer <firstname.lastname@example.org>
Date: 03/10/2003 13:07:11
On Sun, Mar 09, 2003 at 08:50:01PM -0800, Matt Thomas wrote:
> At 06:04 PM 3/9/2003, matthew green wrote:
> > Hi,
> > would anyone object to the attached change ?
> > It makes all the attached scsibusses sleep "in parallel" instead of
> > sequencially, which is a real win for machines with several SCSI busses.
> > On my DS20, which has 8 scsi busses, this saves 14 seconds on boot.
> >i think this change is a wonderful idea.
> There is one issue with this. If you don't wire down your scsi devices
> in your config file, they may get attached in random order.
It should not, the probes are still serialised (via the scsi_initq list
and the scsibus_interlock simple_lock), it's just the sleep which is done
Manuel Bouyer, LIP6, Universite Paris VI. Manuel.Bouyer@lip6.fr
NetBSD: 24 ans d'experience feront toujours la difference