[Date Prev][Date Next] [Thread Prev][Thread Next] [Date Index] [Thread Index]

Re: Exhaustive memory test for Macs?

On Sat, Apr 14, 2001 at 04:05:30AM -0700, Mike Fedyk wrote:
> On Wed, Apr 11, 2001 at 04:35:35PM -0800, Ethan Benson wrote:
> > but its true the only way to really test virtually all the memory is
> > to write the memory tester as a OpenFirmware client and boot it
> > directly -- no OS at all.  
> > 
> What if you have two or more ram chips and rotate them between memory checks
> or every 20 checks.  Do I have the concept, or is ram virtualized where any
> part could be locked and it wouldn't necisarily start from the beginning?

 I don't remember the kernel's exact strategy for memory allocation, but I
think the idea is that it puts itself at one end, and allocates from high
memory down, or something like that.  You could read up on the kernel if you
need to figure this out.

#define X(x,y) x##y
Peter Cordes ;  e-mail: X(peter@llama.nslug. , ns.ca)

"The gods confound the man who first found out how to distinguish the hours!
 Confound him, too, who in this place set up a sundial, to cut and hack
 my day so wretchedly into small pieces!" -- Plautus, 200 BCE

Reply to: