Date: Sun, 22 Feb 2004 23:01:23 -0600 (CST) From: James Van Artsdalen <james-freebsd-amd64@jrv.org> To: freebsd-amd64@freebsd.org Subject: Opteron ECC Message-ID: <200402230501.i1N51NB0049544@bigtex.jrv.org>
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Several weeks ago I reported an instability in my system WRT ECC. It turns out that AMD has published its Opteron errata sheet and errate item 101 appears to be the issue: a bug in the Opteron means you can't have both "node interleave" and ECC scrubbing on at the same time. I've turned off node interleave. I have no idea what are reasonable values for ECC scrubbing in ROM setup but it seems more useful to leave scrubbing on than to enable node interleave, even without a NUMA-aware kernel. (this only applies to multiprocessor systems) > From: James Van Artsdalen <james-freebsd-amd64@jrv.org> > Subject: Re: shaky support or my system? > > > Date: Wed, 4 Feb 2004 06:07:19 -0600 (CST) > > From: James Van Artsdalen <james@jrv.org> > > > > > From: Adriaan de Groot <adridg@cs.kun.nl> > > > Date: Wed, 4 Feb 2004 12:51:45 +0100 > > > > > > > in either fbsd5.2 nor the recent 5.2.1RC. One of the things that makes > > > > it crash for sure is the /usr/ports/benchmarks/ubench program. It does > > > > > > Don't run that, it'll just tell you that the system is only marginally faster > > > than the athlon XP it replaces. > > > > I've reproduced Janne's panic with ubench twice. Both show similar > > outputs from the panic. Panic #3 is proving more elusive: I'm running > > ubench for the fourth time in a row now waiting for crash #3. > > Unfortunately it appears my case was a false alarm. > My Tyan K8W S2885 is not stable unless ECC is turned off in ROM setup.
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