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Date:	Wed, 17 Nov 2004 07:19:57 PST8
From:	"Mark D. Overholser" <os2@markoverholser.com >
Reply-To:	scoug-help@scoug.com
To:	scoug-help@scoug.com
Subject:	SCOUG-Help: OT: W2K pagefile.sys

Content Type: text/plain

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jbrush@aros.net wrote:
> =====================================================
> If you are responding to someone asking for help who
> may not be a member of this list, be sure to use the
> REPLY TO ALL feature of your email program.
> =====================================================
>
> In , on 11/15/04
> at 04:34 PM, "Jeffrey Race" said:
>
>
>>I'd be interested in hearing why the pagefile is dimensioned at 1.5xRAM.
>>What's the point of having RAM?
>
>
> I do not understand how Windows uses the page file, and so I hope someone
> can touch on some technical details as well.
>
> All that I know is that Windows does not use the swap the same way OS/2
> does. It does not use up all available RAM and then begin s wapping.For
> some reason, and in ways I don't understand, it does some swapping to
> RAM, and some to the page file.This causes a lot of disk activity even
> when there is a ton of RAM available. What I don't understand is how
> Windwoes decides what goes to RAM, and what goes to the page file on the
> drive.
>
> I guess you can use no swap file and force it, but I have never tried
> that, so I cannot comment. I only know that I can have a page file active
> with several hundred megs, and over 128 megs of RAM still open as well.
>
>
> After what I have read here, I think I will try and run just a RAM swap
> file and see what happens.
>
> John
>

IIRC, in the Win NT 3.xx days (circa 1996) a co-worker at Intel told me
that the Win NT swap file MUST BE equal or Greater than the RAM, or Win
NT would not use all the RAM in the system, according to a training
class he attended.

I believe that this was "fixed" in Win NT 4.0, of course, it might not
have been.... ;)

MarkO

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