Date: Mon, 20 Aug 2001 01:02:18 -0700 From: Peter Wemm <peter@wemm.org> To: Andrew Gallatin <gallatin@cs.duke.edu> Cc: John Baldwin <jhb@FreeBSD.ORG>, alpha@FreeBSD.ORG, "David O'Brien" <obrien@FreeBSD.ORG>, imp@FreeBSD.ORG Subject: Re: today's kernel + JHB's trap.c patch is *evil* Message-ID: <20010820080218.BF1123811@overcee.netplex.com.au> In-Reply-To: <15232.26016.723068.885342@grasshopper.cs.duke.edu>
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Andrew Gallatin wrote:
>
> John Baldwin writes:
> > As to why the 4100 hasn't seen this, it may be that the slower CPU's are
> > preventing this race from happening, or that 21164's use a stricter memory
> > ordering than 21264's. I've seen similar issues where my dual P3 600 woul
d
> > have problems when my dual PPro 200 wouldn't.
> >
>
> 21264s are the first alpha to do out of order execution. Perhaps this
> has something to do with it.
>
> FWIW, my UP1000 that I gripe about -current stability problems on is a
> 21264 also..
I have a UP2000 in a 'while true make world' loop. It is a 21264 based
system SMP, and it has done more than 50 loops in a row now. (Some were
cut short due to the libss breakage, but it does a 'make world' in 57
minutes and has been running since friday).
I did turn off SMP though since it wedged the ahc scsi controller once.
It has been rock solid since then.
I'm going to see about making this more available.
Cheers,
-Peter
--
Peter Wemm - peter@FreeBSD.org; peter@yahoo-inc.com; peter@netplex.com.au
"All of this is for nothing if we don't go to the stars" - JMS/B5
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