port-i386/39834: i386 install cd boots very slowly

[martin%NetBSD.org@localhost]

>Number:         39834
>Category:       port-i386
>Synopsis:       i386 install cd boots very slowly
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    port-i386-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Oct 30 11:30:00 +0000 2008
>Originator:     Martin Husemann
>Release:        NetBSD 4.99.73
>Organization:
The NetBSD Foundation, Inc.
>Environment:
System: NetBSD night-porter.duskware.de 4.99.73 NetBSD 4.99.73 (PORTER) #81: 
Wed Oct 29 17:38:40 CET 2008 
martin%night-porter.duskware.de@localhost:/usr/src/sys/arch/i386/compile/PORTER 
i386
Architecture: i386
Machine: i386
>Description:

I downloaded the NetBSD-daily/HEAD snapshots for i386: 
200810290002Z/iso/i386cd.iso works fine for me on multiple systems. I also
tried 200810300002Z/iso/i386cd.iso and it causes a *huge* delay during boot
around the time softints are enabled/kernel threads start, i.e. after probing
fdc0 or cd drives on atapibus.

I could not break into DDB. Thought the machine hung, went downstairs to find
the older CD, got distracted, came back several minutes later and found the
machine had managed to start sysinst now.

This happens on at least two (completely different) machines.

>How-To-Repeat:
Just boot i386cd.iso

>Fix:
n/a