slow last 128MB of RAM in a 2GB system?

Jarod Wilson jarod at wilsonet.com
Thu Apr 12 16:11:20 EDT 2007


On Thursday 12 April 2007 15:24:34 Paul Lussier wrote:
> Bill McGonigle <bill at bfccomputing.com> writes:
> > On Apr 12, 2007, at 12:46, Thomas Charron wrote:
> >>  Obvious question, but are you sure there isn't a problem with the
> >> physical memory in the last 128 megs?
> >
> > Ah, good question, I should have mentioned I ran memtestx86 on it.
> > Also, no crashiness, just god-awful-slowness running with the whole
> > RAM region enabled.
>
> I would move up to memtest86plus.  memtest86 is rather old and doesn't
> test a lot of things in newer memory (I forget what, but the webpage
> explains far better than I ever could).  We switched over to using
> that and began finding lots of problematic memory that memtest86
> passed on.

And if that happens to be ecc memory, edac is your friend, can tell you if 
you're getting correctable and/or uncorrectable memory errors. CE's are okay, 
as long as they aren't in volume, but even one UE is BAD.

-- 
Jarod Wilson
jarod at wilsonet.com


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