Hi,

Sadly I think that very few people use the mac68k systems for long
times anymore, especially for servers.

In my case I use a portable, so 8 hrs or so is the max uptime.  It's
too bad that it has broken though.

cheers

bruce

On Sun, Apr 16, 2006 at 01:51:08PM -0700, John Klos wrote:
> Hello,
> 
> After many months of testing things when I've had spare time, I can now 
> say definitively that Quadra class machines (605, 650, 800) will 
> eventually lock up under heavy SCSI usage. This does not happen under 
> NetBSD 1.6.x.
> 
> I've tried several different kinds of SCSI drives, with and without 
> command queueing, syncronous and asyncronous, the same drives with 1.6 and 
> 3, and I have two long term test machines which have significant uptime 
> with 1.6.x and can be locked up by cvs'ing src and pkgsrc at the same 
> time.
> 
> It's hard to believe that there are so few people out there that who 
> either never thrash their disks or who don't observe the same lockups. Or 
> perhaps they think they're isolated or something. Not sure, but it's 
> definitely repeatable, and I've tried four different machines with as many 
> different hard drives now.
> 
> Ideas, anyone?
> 
> John

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