[Gllug] server sleeping

[Richard Jones]

On Thu, Sep 14, 2006 at 01:02:42AM +0100, Nix wrote:
> In my experience a good few GCC bootstraps can find memory and CPU
> faults that a memtest86 can easily miss.
> 
> Hell, memtest86 *and* memtest86+ *both* missed a faulty RAM chip that
> was bad enough that md5sums of a 10Mb file came out different four times
> out of five. It'll basically only find RAM that's *really* bad: an area
> of RAM that only goes wrong if you write the wrong specific pattern to
> it, or to neighbouring cells, is likely to be missed.

General memory testing is a hard problem.  Hardware can hit memory
much faster than software.  (I used to design and implement such
testing hardware).

Rich.

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