IIRC, the AMD board I have at my office has hardware ECC scrub.  I
have no idea if Solaris knows about this or makes any use of it (or
needs to?)

On Tue, Feb 24, 2009 at 2:50 PM, Miles Nordin <car...@ivy.net> wrote:
>>>>>> "rl" == Rob Logan <r...@logan.com> writes:
>
>    rl> that's why this X58 MB claims ECC support:
>
> the claim is worth something.  People always say ``AMD supports ECC
> because the memory controller is in the CPU so they all support it, it
> cannot be taken away from you by lying idiot motherboard manufacturers
> or greedy marketers trying to segment users into different demand
> groups'' but you still need some motherboard BIOS to flip the ECC
> switch to ``wings stay on'' mode before you start down the runway.
>
> Here is a rather outdated and Linux-specific workaround for cheapo AMD
> desktop boards that don't have an ECC option in their BIOS:
>
>  http://newsgroups.derkeiler.com/Archive/Alt/alt.comp.periphs.mainboard.asus/2005-10/msg00365.html
>  http://hyvatti.iki.fi/~jaakko/sw/
>
> The discussion about ECC-only vs scrub-and-fix, about how to read from
> PCI if ECC errors are happening (though not necessarily which stick),
> and his 10-ohm testing method, is also interesting.  I still don't
> understand what chip-kill means.
>
> I remember something about a memory scrubbing kernel thread in
> Solaris.  This sounds like the AMD chips have a hardware scrubber?
> Also how are ECC errors reported in Solaris?  I guess this is getting
> OT though.
>
> Anyway ECC is not just a feature bullet to gather up and feel good.
> You have to finish the job and actually interact with it.
>
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>
>
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