Re: Memory trashing? Virtual memory question.

In article <ve9afs$3q5al$2@amigaxess.de>,
Schlomo Goldberg  <schlomo.goldberg@mailinator.com> wrote:

albert@spenarnc.xs4all.nl writes:
>

In article <KRudnVPYhcFA8Wz7nZ2dnZfqn_SdnZ2d@earthlink.com>,
David Schultz  <david.schultz@earthlink.net> wrote:

Main memory (DRAM of some type) is the new hard disk.
>
The difference in speed between cache and main memory looks a lot like
the difference between main memory and hard disk did a few decades ago.
So if you thrash the backing store, operation will slow down.
>
>
Potentially complicating things are an OS. Is this Forth running bare
metal on the AMD with no OS? If there is an OS then all sorts of memory
management issues appear.
>
If you need more memory space than you have physical memory, it will
seem as if your backing store is a tape drive. :-)

>
Everybody knows that, including myself.
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Haven't you read the original post?
I'm not using half of the ram present.

>

Others have cleared up that despite using half of the ram present
the "unused" memory is what matters most.

You still don't know what kind of memory management strategy your OS is
using.

In practice I care most for experiments. It is hard to conclude
from knowledge of strategy what your programs will do.

Groetjes Albert

>

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