>
> Yes, XP only addressable to 2GB, as I memtioned below I have assigned 2.5GB
> > as RAMDISK with Vsuite Ramdisk, the software can access to the hidden
> > memory.
I've thought about setting up a RAMdisk as I had on my old 8086 but
don't see much benefit. In that box I had a big RAMdisk card full of
memory which originally cost over $2k. Maybe I'm wrong about the current
systems and should try a RAMdisk.
First of all I thought that windows32bit could address something like
3.2gb? At least that's what my computer reports depending on switches
set in boot.ini. I believe it reserves some of that memory for its own
use, e.g. addressing the video. Maybe that's where you get the +/-2gb
_usable_ memory. In any event the memory between the usable amount and
the addressable 3.2gb would not be available for a RAMdisk. Or at least
it would be counter productive as it reduces the usable amount addressed
directly by windows for apps. Perhaps it would be beneficial if you had
more that 4gb installed on a 32bit system.
Secondly, How does windows address the RAMdisk? I assumed that it would
have to page it in/out in blocks using available memory? If so this
would increase the memory windows reserves and further reducing direct
access memory used for apps. Also this paging would be a bottleneck
slowing the RAMdisk memory. True, still much faster than a swap to hard
disk but wouldn't it be faster to just let windows use the memory and
paging block for apps? It seems to me that with 4gb of RAM on a 32bit
system a RAMdisk would have to be smaller than 1gb and that seems hardly
worthwhile. But my presumptions may easily be way out of date.
Mike
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