FreeBSD 6.x CVSUP today crashes with zero load ...
dmitry at atlantis.dp.ua
Tue Jun 27 07:25:13 UTC 2006
On Mon, 26 Jun 2006, Paul Allen wrote:
> The very originating purpose of ECC was to keep the computer going in the
> face of an alpha particle strike.
> Alpha particles flip *single* bits.
> ECC was never intended to detect crummy, failing hardware: that's a use
> people have shoe-horned it into, but for which it is not entirely suited.
Well, correction is the last 'C' in ECC. Don't forget about second (and more
significant): Check. Error Check actually detects failing memory chips
(structure of the correcting code ensures detection of every 2-bit failure
and most N-bit (N>2)).
Atlantis ISP, System Administrator
e-mail: dmitry at atlantis.dp.ua
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