Subject: Re: 3.1_STABLE and SMP
To: Stephen Borrill <netbsd@precedence.co.uk>
From: Brian Buhrow <buhrow@lothlorien.nfbcal.org>
List: port-i386
Date: 03/30/2007 13:46:21
	Hello.  I've found the NetBSD-3 branch to be stable ona number of MP
based systems, runing in MP mode.  However, there is one case where I can
reliably cause the behavior you describe on any hardware with more than one
processor running in MP mode.  If you run sendmail on the box, and sendmail
is doing any amount of work at all, it will hang hard at some point,
whether it be a few hours, or a couple of days.  I'm not sure what it is
about sendmail that hangs the box, but it's the only scenario I've been
able to introduce on an MP based system which has this effect.  I'm sure
it's not sendmail which is the problem, but what ever it does that causes
it to be a symptom seems to be fairly unique in the environments I run MP
based systems in.
-Brian
On Mar 29, 10:49am, Stephen Borrill wrote:
} Subject: 3.1_STABLE and SMP
} Is it fair for me to expect SMP to work with 3.1_STABLE? Every time I've 
} tried running GENERIC.MPACPI on a production machine, it locks solid after 
} a few hours. This is on a variety of very difference machines (e.g. 
} dual-core P4 S-ATA IBM, twin Xeon Dell SCSI blade).
} 
} Am I missing something?
} 
} -- 
} Stephen
>-- End of excerpt from Stephen Borrill